I've had too many lockbacks and linerlocks open in my front pocket to be comfortable with a friction folder loose in my pocket. I have a Jeff Goldberg designed, ordered and sold Special Factory Order hamaguchi (sp?) 3" with a three layer blade/V-1 core and cocobola handles by IC-Cutlery of Japan. I have it in a small sheath attached to a cord attached to my belt. The knife has a lanyard and when I pull on it the sheath comes out of my pocket, stops with the cord attached to my belt and the knife slips out. I also have the pivot pin fairly tight. It got loose within a year, but a short tap with a hammer on the anvil of a vise tightened it up quick.