Josh,
An interesting video, some nice editing, good choice of music etc. Sorry to hear about your friend (and hats off to the guy for talking about it!!). I was suprised it was an arm injury, as some of the limbing cuts, could have been just that! there were a few very unsafe cuts being demonstrated, which is fine if that is how you do it and it works for you. If you are demonstrating for the masses, however, go for best practice (ie - the safest way possible), it could save you from compensation claims from an increasingly litigeous society.
A camp knife is a useful bit of kit, and underated in many ways, but I (personally) can achieve far more with a smaller knife and a small folding saw (with less risk of personal injury).
Perhaps its just me getting older (and grumpier) but I quiet like "safe".
Atb
Neil