PDAir recently released an aluminum case for the N810 (Black and Silver);

http://www.pdair.com/catalog/product...oducts_id=7317

It doesn't specify if there is any protection for the screen, but there is an extremely similar one on ebay:
http://cgi.ebay.com/Black-Aluminum-M...713.m153.l1262

And this one mentions:
With transparent plastic protection.

I asked Customer Service from PDAir about this protection but I still haven't got a response, so I wonder if anybody here has any experience with these cases.