I installed my Phantom Skinz protector on the 24th and have been using the phone heavily since then.

The surface is smooth - almost identical feel as the naked screen. Mine is optically perfect. If I hadn't trapped a single, tiny cat hair under the protector, you wouldn't even know it was there.

My only complaint is that the protector is a bit too small. There is a 1mm margin between the edge of the protector and the edge of the screen.

Overall, I'd highly recommend their product. Less than US$10 for two protectors.

Edit: Link: N900 Phantom Skinz