These days, I usually carry two or three knives, because I like to play with my toys as well as my tools. The one knife that is a constant for me is Victorinox Alox Electrician. If I am going to be outdoors a lot, I will take an Alox Farmer instead, mostly for the saw. I will also carry either an Okapi Biltong or one of my Opinels that has been slimmed for pocket carry, either an 8, or more often a 6. The third knife will usually be a slipjoint, a Rough Rider Improved Muskrat, a Case peanut or a medium stockman. Or for a change of pace, it might be something else; today it is a Mercator Black Cat. Tomorrow it could be a douk-douk or an Antonini Old Bear.
I usually wear baggy wool/poly pants. The pockets are roomy and the right front will easily accommodate three knives plus a 4" Channellock plier. In the left fron go my keys, a Leatherman Micra and, and a Sears 4-way screwdriver. Am I a total nerd? That is a rhetorical question; you do not have to answer it.