Well, got it installed on the tablet - no problem at all.
Much improved from the Developer Preview.

The one issue I have is I can't connect it to my exchange server, even though I have my iPad, WP7 and Android Galaxy Tab connected.
I *think* it's because my exchange server requires an SSL connection and there's no checkbox for SSL in the Win 8 metro account stuff. Might be wrong there, but all the other settings are the same as the iPad/etc. Will keep digging and debugging...