I've been using my metalic colored one for several months now. It does scratch the top corners of my GSM GN slightly when taking it on and off, so I wouldn't recommend it for someone who needs to swap batteries a lot.
That being said it's taking a lot of scratches that my GN isn't, so it's doing it's job. The tiny removal scratches it's making are much less than if I'd used my phone without a case.
One of the rubber port covers has ripped off as well. I've always been gentle with them. All in all I'm still pleased with the case, but it probably shouldn't be as pricey as it is.
That being said it's taking a lot of scratches that my GN isn't, so it's doing it's job. The tiny removal scratches it's making are much less than if I'd used my phone without a case.
One of the rubber port covers has ripped off as well. I've always been gentle with them. All in all I'm still pleased with the case, but it probably shouldn't be as pricey as it is.