Thinking about getting a skin (A white carbon fiber one, undecided on brand so far) for those days I can go without a case (When I'm simply going to class/sitting around my dorm all day ). However I really believe I need the protection that an otterbox provides. Anyways, my question goes to any Defender owners out there, have you tired using you case with a full body skin (clear,designed,etc.)? Does it fit in the case? Do you see a drastic change in screen response?