Hey Sazar, I've read on wpcentral that the Nokia case can scuff the phone's polycarbonate shell. Have you noticed this on your 920 (especially around the corners or back)? I got a matte black one and they claim the issue more apparent because of the black 920's clear coat. Considering switching to a glossy colour if it helps.
please refrain from telling other forum members to "Go eat a buffet of dicks." in the future.