First off, hurrah for finally being able to order both a Nexus 4 and the google bumper! WOO!! I'm going to be using front and back screen protectors, and was thinking of going with xoskins. Problem is, I have no idea what the difference between "case fit" and regular is, in terms of compatibility with the bumper. Does anyone know if I need the case fit, or is the regular one okay with the bumper? I know that if I was using a full-body case I'd go for the case fit, but have no experience with bumpers, having never owned a phone with a back pretty enough to not cover up. Thanks in advance!