I'm a contractor, so I always have stuff on me that might make a viable weapon.
Most of the places I go, I can carry my gun. The places that prohibit my gun generally box my pocket folder, multi-tool, etc.
I do sometimes carry a fixed blade as a back up. Sometimes something as big as a Gerber Mkii, generally a stout 3.5-4" folder gets the nod though.
My thought process is this, I don't train enough to be 100% with my gun. I do, however, work with my hands. Tools, shovels, axes, khukuris. I've been using these kinds of things daily since i was a boy. I'm a pretty beefy guy, and if I were put in fight or flight mode at bad breath range, I would probably be more dangerous than with my gun.