On the incipio website, there is a compatibility chart showing which cases were designed for the verizon iphone 4 and which are compatible. Both the NGP and duroshot drx are supposedly compatible. Here is my question, even though they are compatible how centered are the cutouts on these cases? I know the mute toggle isn't in the same spot as the GSM iphone 4 and this has me a little concerned. Someone please chime in, I am a little worried about buying both of these cases and not having them fit properly.