I thought if you wanted to go back to an unrooted status and you initially used the one click method a couple months ago, that it would be as easy as flashing the nand restore made after the initial root and then using the one click method to unroot. I guess many folks did not make a nand backup their first time they flashed a new Rom after the one click method. Perhaps I am wrong.

I myself will most likely wait until a dev comes out with a rom with gingerbread incorporated in it.