I bought a glass protector from eBay, and expected the same issue. I fitted it in the bathroom after a shower, cleaned the screen with window cleaner 2-3 times , and used the anti static remover. The glass had a thin layer of glue, and this helps to hide scratches and makes fitting very easy ( similar effect to the glue you use if you've ever replaced a smashed screen).
I'm very happy with this glass, I'll post as to how easy it scratches, bit my first impression is very good. Fingers prints don't hang around, and it doesn't smudge.