First I must tell you that I didn't abuse this knife very much, so I can't tell you anything about the edge holding ability.
When you look down the spine at the back of the blade, I think that this blade doesn't appear to be so thin at all, at least for a "boot" type knife. The point is really needle sharp as you can expect from the design and the plain edge on my version is pretty sharp too. But what I really like about this design is the fact that it conceals so well. when carried inside the waist band it virtually disappears and it carries very comfortably.(my version came with the cordura sheath and not the kydex sheath CS advertises it with, I think the cordura/nylon sheath is better than the kydex version they offer.)
the handle fills the hand good, considering the size of it, and the notches on the spine help in getting a good grip.
Overall, I think it's a really good hideout blade. There maybe some problems with the design, such as point strenght. But then you should get a some type of tanto, I guess. I like it because it's small,comfortable,sharp and very concealable.