Like @Cory I live in FL.
I EDC the 92 in a Keepers AIWB. I work from home, so I EDC it it, realistically, when I'm running errands and generally out and about.
NP3 is probably the best bet for those parts. MidwestGunWorks might still has some hammer pivots in NP3...
I think it really depends on the persons sweat type... I don't notice much rust on my guns... I do have a bit of grease covering the head of the hammer pivot?
EDIT: So I pulled out the pistol and checked it over - I use a lot of grease on my slide rails, under the locking block, the pivot pins, etc... I even greased the mainspring pin.
I usually add a touch of oil to the locking block and the hammer-pin interface when I carry. I think this coating keeps it form rusting?
I'm using Gunfighter Gun grease... Got it from Mickey at Carrytrainer. In the past I used to use CudeLube which is a very heavyweight oil that stays put, but the white grease stays put better for an EDC gun...