Thanks, everyone! <img src="/ubbthreads/images/graemlins/grin.gif" alt="" />

LF, that is a pocket sheath that I made. Works pretty well - it's wide at the bottom to stabilize it (actually leans the knife forward, which is good), and although it's hard to tell from those pics, the wide bottom is curved to fit the leg and conceal better. Also, it's got a thumb-push to get it out cleanly.