Best statement yet in this thread.  Fuck Bear Grylls, honestly.  If he is not really out there surviving, the only reason he is squeezing water from a pile of shit is shock value and to get paid.  If you actually want to learn something, Les Stroud and the guys on Dual Survival will teach you a lot more.  Les Stroud is more of a badass for these short reasons; he carries his own camera gear, films and edits his own show, frequently backtracks to pickup camera after "getting the shot" regardless of whatever obstacle he may have to encounter again, and finally because he plays a mean harmonica.
If you REALLY want to learn something, pick up books!  Try the "SAS Survival Handbook: For any climate, in any situation" by John "Lofty" Wiseman.  There are many other good books out there as well, that is just a recommended starting point.
And I personally hate Gerber, just my own opinion.  But as mentioned above the LMF II, aka ASEK, is a much better choice than a glorified "Pro Model" knife for a narcissistic tool.