no clips. I detest them. I tried them, but they all developed hot spots when using the knife.
If too large for my pocket (EG: a standard Buck 110 or Old Timer 7OT/6OT at 5 inches closed, or a two blade slipjoint folding hunter at 5.5 inches closed) they go on my belt in the sheath they came with, or a like generic sheath.
4 5/8 inch closed and shorter go loose in my RFP. The only exception is a 4 blade scout/camp/utility/demo knife, which is (almost) always attached to a 32 inch lanyard, which in turn is attached to my belt.
After 60 years of having at least two knives riding horizontal in my right front pocket, I don't notice them. Also, unlike one carried vertically, they don't poke me in the thigh when carried horizontal.