I currently have an Otterbox Defender case on my G4, but the plasic screen protector is really annoying me. I've heard of multiple people say they took out the plastic cover and put on a tempered glass one. I want to do this...but I don't want to try to remove the plastic one and ruin the case or something. Also, is it possible that the case won't fit with the new screen protector? Has anybody tried this with a screen protector yet and has it worked?