I know people are anxiously awaiting these things, and I just wanted to give you a heads up that they suck.
They lag, as expected, seem to help heat up the phone more, and are generally boring.
Granted, this is coming from a hacked 2.1 ROM but it's made by Pete who usually knows what he's doing. Just saying, don't get too excited about these things.
It was interesting for about 5 minutes and then I switched back to the stock so that swiping screens wouldn't lag.
Your choices are limited and ugly.