Has anyone tried CP-571 case on our N9s? I'm hesitating to buy it. I don't like the original silicon one, since it has a bad effect on the back of the phone. And right now I use n9 without a case very carefully (I don't put it anywhere unless there's a soft cloth below it) but hell I wish I could do with it what I've been doing with my n900, 5800, 6650f. I mean put it anywhere in my car, throw on my bed.