IMO there's no risk of having a scratch.

i know that the backpannel is not scratch resistant but to get to the camera lens, you'll have to move your phone over an object larger than 3mm.
That is the distance between the camera lens and the backside of your phone..

Try sliding your mouse over a 3mm big object and you'll see what i mean

And i mentioned i would use it in my bed because its a soft, but still a flat surface.

also, have you ever heard of n900fly?
http://talk.maemo.org/showthread.php...throw+n900+air

I think he wouldn't mind a scratch