I plan to buy a folio case (likely Devicewear Ridge) and screen protector when I buy an iPad Air, but do I need some sort of back protector/skin if it will be in the case? I don't want the exposed areas (i.e. the camera) to get scratched and I don't want the case to scratch the back. Maybe I'm just being paranoid, but I'm asking because my iPhone has the Power Support front and back protectors and a case. I notice that the screen protectors available for iPad don't come with the back protector. BTW, if I wanted a back protector, what are my options? Would I get a skin such as Best Skins Ever? And would it fit in a case with that on?