At work I usually have a Leatherman wave on my belt. I also carry a S&W rescue knife, one of the newer ones with the tanto blade and window punch for the off chance I need it. At home, I'll bounce between a gerber profile or a paraframe. The good thing about the Paraframe is that one of the openings in the handle fits pretty good for opening oxygen bottles. I have a couple of tactical knives for the paranoid days, but this is my main rotation.