Chicken, Tim did change over to Ultraspeed, as I recall. I don't know if he's completed the changeover yet or not, but in our last conversation he told me he was gearing up to make the moves.
Gordon, I won't go into all the technical stuff behind Alabanza's controls, but you can change the domain name on an existing account. We've done it successfully a few times for those clients who changed their minds, or had a different domain they wanted to develop first. It's usually rather painless. The counter issue is one minor setting by the host and eliminates the error message that the system generates.