I use the rubber case from incase just so I will have more grip on the back of the phone, otherwise it's a little slick and it's hard to use one handed.
I lusted after that Incase Rubber Cover and picked it up last weekend. After two days, it looked like crap because of the lint that stuck to it from my pocket and the rubber was starting to stretch. There just isn't enough material on the front of the case to keep it tight.I'll be going back to my Case-Mate leather case this weekend.
I put it in an iPod sock...a little short, but I always put it in an empty, clean pocket....its fine. Better then naked, but I still get the whole "This is the iPhone, the way it was made to be used" feel
wait until you drop yours, and say that again. i recently got a foof pouch to go with my power support crystal film. i think it makes for a great combo.