I've the lower right keyboard bezel slightly affected by the sliding screen. They're not scratches, the matt finish just got polished to a glossy finish.

I've also got some keyboard keys that have started to lose finish.

I've had these exact same features on my n95, so im pretty sure its due to my individual usage antics. I slide more with my right, and my fingers have nail until th edge - so however i press i have to use my nails.
And yes i do cut my nails =)