for my games we actually have been considering the idea of limiting the total value of all types of armor (and weapons possibly even) to resources. physical armor is bought 1 to 1 and mental/social is value+1.
so you want social armor 1, physical armor 1 and you have a resources of 3? go for it, you have this fantastic looking leather jacket, so people can't make you look bad as easily while you wear it plus it'll make it that much harder for someone with a knife to stick you.
you want mental armor 2 since you hobnob with the white court and have a resources 3? alright, you've got your grandfather's old medal of bravery from WW2 that reminds you of all the times that your grandfather would tell you inspiring stories.

all of this is stuff that can easily be taken away depending on the circumstance (and thus is not worth a stunt) but in general can act as armor in a balanced way. in general i'd require some tie in to an aspect, maybe some sort of "biker" type aspect for the first example or "raised on heroic stories" for the second. but so far i've found that even without its pretty balanced.

@masurao, the character in question is an extremely powerful telepath and a long practiced diplomat. healing his mind is no different to him then a healer mending a wound. recovering from social consequences comes easier since he can manipulate the opinions of others to a degree, plus he has a very resilient self image. there are other characters that may take a different combo, just assume that for the purposes of our game it fits.
i did mention that there are alot of mods inherent here, i'm just asking opinions on separate catches (with rebate) for recovery powers that affect separate stress types.

@umbralux, the examples i gave are not the actual ones the character in question is going to use, some will actually be in opposition. sometimes what you suggest will work rather well, but in one case it won't. fresh example, Physical catch: any psionic source, mental catch: arcane magic sources. the mental defense is designed to protect from psionics/torture/other and be weak to magic (the character is essentially magic blind so he can't defend against it in any special way, he doesnt understand it so he can't fix/defend against it easier then a pure mortal could) whereas the physical is designed to protect from any nonpsionic physical assault (he repairs his body using psychic energy so the attack has to disrupt that psychic energy).
as i said, there is alot of house ruling going on and it would take forever to fully explain it.

My groups (1 basic DFRPG game set in NYC and one heavily modded game set in an anime world) have had several intragroup social conflicts. only when it improves the story naturally, example:
in my DFRPG game, i'm playing a cop, who, at first was not clued in, after his first supernatural experience, he was having dinner with two other pcs (and talking about the experience off the record, trying to come to terms with it). my character was very much in denial and each of the other pcs had different ideas on how to clue me in. so it became a social conflict, if i had won, i would have remained clueless (which would have complicated what came next) and if i had lost i would have had to accept that magic might actually be real (i lost when our impulsive sorcerer used a light spell as a social attack to deal mental damage, i took a mental consequence and conceded).

personally, i think that if used appropriately (and with full player support) intraparty conflict of any sort can be of great entertainment and can in fact move a story along.