Went that way years ago. To me, if I need a small cutter, I just carry a small penknife size slip joint like a Case peanut that served me for years, of my SAK classic. If I needed more knife, then I go to my Buck 102 woodsman or my Martini Finish puuko. Both are light and easy to carry, but I'll also stoop to carrying my old Buck Hartsook in its sheath in a side pocket. The sheath is secured with a lanyard to the belt loop just outside the pocket, so when I pull the knife out, the sheath disengages and hangs there right outside the pocket. Done cutting, slip knife back in sheath and slide back in pocket. The small pocket fixed blade is easier to keep clean, and no lock to worry about if I have to lean on it a little bit.
I don't even own any knife with a lock, just a few small slip joints and a few fixed blades.