Yeah, the straw trick is pretty nifty, everything from fire starting materials to neosporin or anything else can be packed into one. They're really popular with the Altoids tin survival kit crowd since they take up so little room.
Havent used my Sawyer, pretty much saving it for a real life situation, although I've heard it makes vodka taste super clean... so I'm tempted to give that a try
The info on the stove isnt really surprising, it kinda struck me as trinkety... a fine idea that maybe couldnt live up to its claims.