I bought a supposedly "sweatproof" Arkon XXL armband for my HTC One X. After using it once, I notice a small amount of sweat on the bottom of the phone and the back of the case. After taking the phone out, I could make sweat come THROUGH the supposedly waterproof neoprene just by pressing the front and back together. It doesn't seem like a lot of sweat, but maybe this amount could eventually work its way into the electronics? Does anyone have experience with using an armband like this long term and either having their phone fry or continue to work beautifully for a couple years?