I carry my 97B cocked and locked IWB in either a Vedder Light Tuck or a TTGunleather Slim XC. Never had a problem with the safety being bumped off. Both holsters have sweat shields, so the safety lever is covered. I also, on occasion, carry it in a M7 shoulder holster. Check out the sticky at the top of this forum for other holster options.
Note: I use Perry suspenders all the time, no matter what I'm carrying, from my 97B down to my CSX. Nice not having to cinch up my belt!