Originally Posted by Almoxil
Just keep the factory plastic sheet. It should do the trick until your screen protector arrives.
That's what I'm doing right now, though the static-cling nature of the factory sheet makes it absorb dust and fingerprints like nobody's business. I ordered my protectors a week ago, and hopefully I won't experience any shipping delays and will get them this week if all goes well.
I had a Boxwave anti-glare on a PDA a couple years ago that I liked, but you can't beat 3 good quality protectors for a whopping $6.