I had one for about a day and sent it back. The handle was too small to really get a good grip on it and this fact, along w/ the kraton being a little slippery, did not make a good knife, especially since I got the double edged version. If you're wondering about its aptitude for handling a self defense situation, you're better off w/ a REKAT Fang or a La Griffe, they're both worth the extra bucks. As far as edge holding goes, I didn't have it long enough to beat the hell out of it, but it did shave hair quite readily, and the serrations cut through paracord rather nicely. As for the sheath, it was very secure, but TOO secure. It took one helluva tug to get the damn thing out! Besides that, forget about it being a low profile knife, the sheat is of a sandwich construction, and the mold is such that it surrounds the guard, making it too thick to wear inconspicuously. I'm not sure if you were asking questions with respect to the answers I've given, but I hope this helps nonetheless. All in all, I wouldn't recomment this knife for any serious use, utility or self defense.