I did this for a while, actually, I used the sock as the case. I was so anal retentive in the beginning. Now about 6 months since release and the phone being about 4 months old (I had to do a replacement) I just use my shirt, any shirt. My screen has zero scratches, the metal bezel thing is scratched but that is it. So use your shirt!
That is funny greenjbhsd, that is the same thing I did. Made sure the counter was clean before I sat the phone down. Carefully wiped it with the microfiber cloth after using it. Kept the dust out from under the edges of the case. Now that I have had the phone for awhile I toss it on the counter, stick it in my pocket with keys and other junk and wipe the screen on my shirt when the fingerprints cover the screen totally.
I lost my black iPhone cleaning cloth. It bothers me because I want the original cloth that came in the box. If anyone has an extra or is not using theirs, I am interested in purchasing it. If you can help please email me at firstname.lastname@example.org.
All you guys who use your shirts; do you breathe on the phones screen to cause condensation first? Because apparently it is bad to do this to devices such the like as the iPhone, PSP, iPod nano 1st gen etc.