Yeah, i don't like it too much.
I saw the screen shot and I'll wait till final with a chrome theme
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Unchecked "Tabs on top," check "Bookmarks Toolbar" and "Menu Bar," and now I love it. Redrawing the UI during resizing is a bit laggy, but most customized implementations are so nothing special there. I do think that the font for the menu bar needs to behave a bit more like the title bar under Vista, as those little differences are kind of really annoying. I also think they need to speed up the Back/Forward-Refresh-Home button highlight animations a little bit.
I wonder what the jet pack will be like.