But I'd still say that rubber coating is better than glass surface. For example my Oneplus X (w/ Sailfish), both sides of the phone feel like glass. You can use the phone as a spirit level; if the surface isn't completely even, the phone will slide and fall down The phone is way too slippery and only usable with rubber covers. And if you make a protecting cover like Otterbox for n900, it will greatly increase the thickness of the device so it won't fit to any pocket anymore...