WrongConcept
I think there's a lot missing on that list, but that's probably because the author was told to "bring what he thought he needed", and the list only contains "what they ended up needing". Communications gear is definitely one that missing though, I agree with that.
I'm not at all convinced of the clip taped to your leg, though. What good is it when it's taped to your leg? That one time you desperately need that extra clip is when the 5 seconds it takes to get off of your leg is too long
