I tried a couple of the snap on cases. They covered the top row of the keyboard making typing difficult. They also covered the promixity sensor, leaving the screen on while on a phone call was big problem when your face hits the mute button. Don't waste your money like I did. Also, don't worry about putting a screen protector on this, it reduces touch sensitivity and I don't think you can scratch this screen anyways. The screen is made from Gorilla Glass.
What makes the Droid's screen so tough? Gorilla Glass, of course | Android Central