I don't have a knife in my pocket as much as I used to but that's because I always have my keys on me. On my key rings I have a gerber dime (multi tool) and a small Kershaw for opening boxes, packages, and a whole bunch of other stuff. I've got like 3 or 4 of them spaced out between sets of keys so I've alway got one. Makes it easier on the pockets at least. If I'm dressed up nice I often throw a case knife in my pocket.
Ah, yes. I forgot about the SOG "key" on my key ring. Security never notices it either.