I tried it in 12.10, worked like a charm, only felt (as someone mentioned) a little sluggish. Bigpicture-mode worked good too, browsed around for a while in there. I'm not a beta-tester, and I don't think it's the right approach to "bypass" the "beta-restriction" on day 1, so I kinda regret trying it out, so I uninstalled it and will now wait for open-beta or public release.
But it's so great that something like this is finally happening!
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