I don't need much in the way of shock protection for my 4G, as it is used primarily in my truck, and I keep it in my backpack most of the time. what I'm looking for is protection from scratches. Does anyone have any experience with the Radtech iPodSleevz? I love their PowerSleevz and ScreensavRz products. Is there something else comparable out there? The iSkin Evo2 looks way cool, but I can't tell how much bulk it would add to my slim white beauty. Opinions?