I love the size and shape of the blade of my piston, but it doesn't seem to hold an edge very long. Also, i couldn't stand that recurve in the back of the handle, so i made a new backstrap that sticks out a little in the recurve area. It's so light i worry i am going to break it but it has held up pretty well so far.
I can strop it to a scary sharp edge very easily, i shaved with it once because i could. It's the eaiest knife to get that sharp that i own. The fit and finish are top notch.