This product was mentioned in
with an average of
This should be arriving today for me. No reviews, but I've read others have ordered this one as well. Its not glass like I would normally purchase for a screen protector, but since this isnt going into my pocket with keys and the like as a phone would be, so I think it should be fine just to keep minor scratches off. Ill reply with my thoughts once I put it on and I'll leave an Amazon review for others as well.
Edit: So I just attached the above linked screen protector. Id say its mediocre at best. Quite thin and included stuff I didnt know what to do with, like stickers. But for my uses, it will be fine. This one is a thin plastic sheet designed to just keep very minor scratches off, which is all it might come into contact with in my usage, YMMV.
Just came across this on Amazon, it's not glass but at least it shows companies are starting to make them: