What has everyone decided about using a screen protector with the 3GS? The oleophobic screen addresses one of my big reasons for using an anti-glare screen protector - I hate fingerprints. Still, it will do nothing for scratches. But my other worry is that putting a screen protector on the oleophobic screen will somehow damage it. I have a screen protector here to use, which is one of the ones you get from the Apple store. What do you all think?