I have had the apple bumper and the incase slider for my iPhone 4 and both cases have somehow allowed the metal sides of the phone to get scratched. I just got a replacement phone because of proximity sensor issues and I have also ordered an Incipio Feather case, and I was wondering if anyone knew of a way to keep the sides from getting scratched? I have heard that the side peices in the wrapsol and invisible shield won't fit with most cases.