That Bear Grylls knife looks really awesome with that stuff that he has in there.
I have a question about the sharpened back edge of the knife. I have a knife with a sharpened back edge, and I thought it was very cool. However, upon actually using the knife, it seems like it makes it a little more difficult to handle safely. In addition to that, I can still baton wood with it just fine, but my wooden "hammer" has a lot shorter life because of that sharpened rear edge. What is the specific purpose of that? Is it a combat thing?

EDIT: I also wonder about half serrated blades. The serrated section is so short, that it seems like it'd only be useful for cutting ropes and things of similar size.