Enchanted Items:
A power 3 maneuver is probably not sticky. So since it's fragile, it would go away as soon as you tag it.
If it was a power 4 maneuver (and nobody opposed it), it would last the whole scene (with only one tag) and multiple uses of the item would give another free tag - or, if you want, a second duplicate aspect - depending on what the aspect is and if it makes sense to have two going simultaneously..
The whole scene duration is, really, my opinion. I'm not exactly clear on whether they should last the whole scene. Also, It depends on the effect of the maneuver. As far as I know, things like Enchanted item armour and blocks only last for one exchange and not for the whole scene so I don't really see a reason why a maneuver would last the whole scene unless the maneuver is a permanent, non-magical, effect like "kindling on fire" and it's sticky.
Evocation:
-Rotes
You have no flexibility with a rote. You must decide the duration, effect and power of all attacks and maneuvers in advance. Once determined, they are cast exactly the same all the time.
- borders
Zone borders are full strength. The paragraph is silly and they don't really separate the two things very well.
I think, often times, a zone will have multiple borders. If you want to put up a zone border, it will affect one border. If you want to completely enclose a zone, you need to add 2 shifts to make It a zone-wide border.
Example:
an area might have a fence on one side (border 3), a brick wall on two other sides( border 8 ) and an open area (border 0) on the 3rd. Your zone border(power7) will affect one of those borders. To affect the fence and the open area, you need to add 2 shifts to hit the whole zone.
Whether or not the border goes down depends on how it is bypassed. In the case of zone borders, I think you just use your best judgement. If I use a fire-hose against your Fire-wall, you can assume the border has been destroyed.
My personal opinion is that border blocks created via spells don't automatically go down the same way that normal spell blocks do. As I said, I think you should use your best judgement.