I think a better question is... With the Winter Mantle, is Harry now part Fae? We don't know if it bestows longevity on the wielder, but it does give them a faes' weakness to iron/steel - see Harry & Fix getting hit with nails and losing their respective bonuses from Summer & Winter.

I'm unconvinced that they're inherently any more vulnerable to iron/steel than before the Mantles. My read on it was more that the iron blocked the Fae power from doing anything for them, thus dropping them back to where they'd be without the Mantle, which is a sudden shock to the system, especially the longer and more dependent/used the Mantle has been.
I suspect that the situation is more akin to that of Odin/Kringle - While actively wearing the Fae-origin Mantle, they've got Fae weaknesses and limits, but if they were to somehow learn how to not be actively wearing the Mantle while still possessing it, they would not have those weaknesses and limits.

Odin/Kringle is treated as Fae (for most purposes) while he has the Kringle Mantle active, but when he shuts it down to switch over to Odin, he is no longer treated as Fae, but he is always treated as Aesir.

I think an analogy would be ... psychoactive skins (from D&D3.xe, psionics) - you can have more than one on your skin, but only one is active/primary at a time. With mantles, you can have more than one, but only one is active/primary at a time, though with mantles you probably get some passive benefits for mantles that aren't currently active/primary.


As for Harry's longevity ... I doubt we'll ever see it, although Fix's predecessor (?Raoul?) was pretty old but apparently sufficiently fit that he could probably have beaten Slate had he not been bushwhacked. The Fae Knighthood Mantles may well increase longevity, but Harry's already a wizard - and a powerful one - so his natural lifespan was already substantially greater than his probable life expectancy (let's face it, he's never gonna be able to afford life insurance). I suspect that the Knighthood Mantles help keep their bearers physically fit and able longer, even if they don't actively extend lifespan, plus the whole gaining Fae magic may also have an effect similar to that of humans having magic, although that is purely speculative.
Most Knights are generally interchangeable/readily replaced, however, so I'm uncertain as to whether or not the Fae would care to invest the power to actively boost the Knights' lifespans beyond the passive effects inherent in enhanced physical fitness and health plus the magic channeling aspects. Besides, Knights aren't likely to die of old age anyways, and are probably fairly likely to die fairly young while in combat with someone or something.

and i think youre over simplyfing things a bit:

the mantles likely have more then one purpose. (mab's for example probably does waaay more then just make her logical.)

the WK, along with making a violent idiot, also has very strong reporductive instincts wired into it where sidhe ladies are concerned.

and I doubt the 'warden of DR' is a mantle at all, frankly. A 'mantle' is in essence, i suspect, a more advanced bob. a programmed knowledge system that can be passed from host to host; some are likely far more advanced then others. While harry gains some information from sharing DR's knowledge, there doesnt seem to be any instinctive programming built into it.

what i believe Mother Summer was saying is that the mantles learn from each bearer, and Harry can choose to change his in some ways if he has enough will.

the WK mantle may be a violent idiot now, but wanna bet that by the time Harry passes it on it wont be?

More advanced Bob? Nah. I'd say it'd be a significantly less 'advanced', if by 'advanced' we're meaning intelligent/self-aware. Of course, depending on the Mantle in question, it may or may not be more powerful.
Being nearly or more advanced than Bob, I think would be less like a Mantle, and more something like the Fallen component of a Denarian.
In computer terms, Bob is an complete self-aware AI, a Mantle is more akin to smart or expert programing.

Well, the reason I found that particular quote was only to point out that whoever was helping Denton, it wasn't a situation where they handed him the belts and then left him to his own devices. If Cowl was the one who helped Denton and he did not just abandon him, and given the quote, he did not, then in DB, Cowl should've had more first hand knowledge about Harry's capabilities than his statement would suggest.

Re: how bad the info is about Harry working for the WC--I agree, its terrible. Harry even bursts out laughing when Denton tells him about it. There are so many different reasons that statement could've been made that way, I think its impossible to know the specifics. Did Denton just conflate the Wardens and the WC when whoever it was told him about them? Did the person lie on purpose to get Harry killed in a preemptive strike by Denton? Did the person just not know that Harry wasn't working for the WC, let alone the Wardens? I don't think we have any evidence to point us any particular direction.

Fair point - it does indicate that Denton's source for the belts didn't just leave him to his own devices.
On the information front ... Denton pretty clearly had bad information. I'm dubious about it having been an attempt to get Dresden killed preemptively - there's no known reason (or entity) as of Fool Moon that wants Dresden dead. It is a strong point against Cowl being closely involved - his info seems to be better than that, plus no reason to want Dresden dead. It also pretty well wipes out any possibility of the Erlking being involved.
I don't see any apparent reason for the belt-distributor to lie about Dresden the White Council solely existing to police magic users and Dresden being one of them, or to attribute everything the Wardens do onto all of the White Council.
I'm inclined to suspect that the entity that gave Denton the belts also had bad information, but I'm not quite sure why or who that would - or could - have been.

Ok, I found the reference. Its in ch 30 of FM-Denton and Harry are talking about how the belts have led the FBI agents to kill people and they sent Harry after the lycanthropes. Denton says 'After the deaths (the people the FBI agents killed the month before), I was warned about a governing body. A sort of magic police. The White Council. That you worked for them.'.  So Denton was given the belts and killed people. Then someone warned him about the WC. Assuming he wasnt being helped by 2 unrelated people, whoever helped him was not hands off. Therefore, if it was Cowl, he shouldve known more then he did in DB.

Well ... somebody was either (badly) misinformed and/or lying outright. As of Fool Moon, Dresden is most definitely not working for the White Council - and while the White Council has the Wardens for policing magic users, that's far from all that the Council does or its primary function.

bet ya a donut they were maggie sr's

Some of them maybe .. but I think she'd've tried to get rid of as many of his books as she could have, or keep them from him in some way.  Some of them may also be books of information that he compelled out of her. But some (perhaps many) of them likely predate her taking up with Raith. Dude's old. Some centuries at minimum. Odds are pretty good he's picked up various texts along the way.

And Maeve/Nemesis and or Titania knew that how?

What makes you assume that they knew he was there in the first place?

The Gruff showed up after Harry used fire magic (which was/is apparently still touched by or resonant with Summer power in some way) - that's why Tiny was there. Titania had no active involvement in his arrival other than tasking the Gruffs with whacking Dresden.

If you assume Maeve/Nemesis sent the Hobs, which seems likely, they were going after the Archive, not Dresden, or trying to attrite the Archive's defenders/defenses so that getting her later would be easier.

Can I get a quote on Mab lulling their demon halves to sleep (I don't have my books with me)? I do remember something like that but I'd like to see the exact wording.

Lea did that ...

“What did you do to them?”
“I lulled their predator spirit to sleep,” she said calmly. “Poor lambs. They didn’t realize how much strength they drew from it. Mayhap this will prove a useful lesson.”
I frowned at that. “You mean… the vampire part of them?”
“Of course.”

Changes, chapter 15.

I rember three - Harry not being fully human- but my ideas on it have been pretty fully discredited by now ( Jim said Oberon is dead, and my idea that Lea was Maggie sr 's mom is also toast)

anyone who wants to rebuild it after I got totaly flattened/trashed/ proved wrong is more than welcome to try

Harry not being fully human would have to either be from the paternal side, or something that Maggie LeFay had as well, and probablly Eb McCoy too, though likely they would have been unaware of their nonhuman side.
If, as the speculation goes, McCoy/Maggie/Dresden are blood descendants of Merlin (not just master/apprentice descendants), that's likely the most probable source for being partially nonhuman through Maggie, as in a whole lot of tales Merlin is some variety of nonstandard/partial human.

I think that Jim's precise wording regarding Oberon's fate was that he "didn't make it" ... which certainly implies that he's dead ... but I suppose he could be locked up somewhere unpleasant (Demonreach?) and unable to escape Mab/Titania's wrath.