Purse is the worst place to carry, because is someone takes your purse, they take your life line.
I would only recommend it if a lady wanted to carry a full size gun in there and then a back up on her.
SHTF vs TEOTWAWKI you ask? SHTF, just some crap on the ceiling and walls, TEOTWAWKI end of the world as we know it. Orignally made by 9mm/®™©