My RedHat experiences so far.
Very cool stuff. Under mono the software does run. I don't do much on windows so this is a must >:}
The only things that are holding back full operation are the following:
The Navagation Links icons do no seem to show up in IE. I've also noted that with the "blog" content, posts show up twice and unless in the middle of the page display a "squished" quality. Which may be the default behavior.
Most of the custom modules I can live without and I'm willing to wait for mono to catch up. I'll do a little write up for Joe for the Fedora Core users out there.