Hey guys, I bought my iP4 a couple of weeks ago and I ordered a PixelSkin HD from Apple's free case program. It's supposed to get to me in a couple of days (already has shipped). Anyways, a buddy of mine emailed me that he went ahead with the free apple bumper (black) plus he bought a 3m di-noc carbon fiber (pretty cheap on Ebay) film for the back of his iP4. He swears that's the best looking option he's seen, adds basically no bulk plus it's dirt cheap. Has anyone tried this? Any opinions?