I did the same thing with a radio shack fan a while back and started a fad with the guys I play with. Now almost everyone has some sort of batteries hanging off or in thier mask. One thing I would suggest is that people use the zip tie mount idea. It just seems safer to me.
Imo this is actually the quietest fan setup you can get. Last sat when we were playing a guy with his jt fan on came up and stood next to me while mine was running and I could hear his fan buzzing louder than mine. I had to laugh as he spent about $50 on his and mine cost like $10 in parts from radio shack.
I like small dogs!