I tried multiple different screen protectors on mine, my wife's and my daughter's Eris's. All of them either killed the look of the screen, or just made them less "slick" for your finger to glide on the screen. We each had our phones replaced under warranty for various "issues", but none of us ever damaged a screen. They're tough enough. After going through a few Eris's, an Incredible, and now a T-bolt, it's bareback for me all the way. If you're so hard on your phone that you think you need a screen protector, you probably need a full case.
Biker by choice