Okay don't shoot me for beating this one to death but I noticed 2 more knives which are very similar looking but one is custom and one is not.

Gerber Big Rock Camp Knife and Chris Reeve's Pacific.

http://www.chrisreeve.com/pacific.htm
http://images.google.ca/images?um=1&hl=en&safe=off&client=firefox-a&rls=org.mozilla:en-US:official&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=gerber+big+rock&spell=1

Obviously different steel, blade grinds, scales, etc but very similar looking.