These little knives are cool. They mount on the BCD hose, and you forget about them, and most people will never need it. That's the idea anyway. My problem is I have a perfect knife, but I need to locate a replacement sheath. Does anyone know where I can find a replacement sheath? Keep in mind that this isn't an expensive knife; the low end model goes for about $30.00. The high end is about twice that price. I know I could make a sheath from canvass strap or something like that, but I really like the BCD setup. In the end I might just buy a new one. Any suggestions?