There is also http://www.h2oaudio.com they make waterproof armbands.. you can run with them too.. and swim.. well i dont use my iphone when swimming.. thats why i have shuffle in case and headphones from H2oAudio
I wouldn't give up my Armpocket for anything. I've had it for several months now, and it's still working great
I've tried belts, they bounced, and sweat got into them - killing my remote car key