I've done a few Windows 8 installs for clients at work, and there is a slightly hidden button someplace that will let you install Windows 8 without a Microsoft account. Now, of course, this evening, I'll have to find that button again.
And then, after that, I'll have to figure out how to un-hide the local administrator account. Seems that after Windows XP Home Edition, Microsoft has liked to play tricks with the built-in local admin.
Overall, though, I'll be interested to see how it turns out!