Yeah, the screen itself is really tough but not unscratchable, so I rather the *cheap* screen protectors get scratched. I had my n900 for a few months now and scratched the first screen protector - the stylus scrapes over the scratch and feels weird.

I was just a bit concerned as I saw a few screen protectors selling for $6 each, and since the n900 being a discontinued platform, people stop making protectors for them...