I've seen a couple full body hardcase protectors on ebay. i have a few queston. 1. can you actually use the screan as if nothing has changed? i've heard because the iphone uses the electricity in your body for the touchscrean so you can use full body cases. 2. where is the cheapest AND best to get them? the ones on ebay were like only 7 bucks, but i dont know abou thier quality.