I'm using it as my main browser at home & work.
It's fast, and the lack of toolbars makes for a large web page area.
It's a little flaky at times, some flash heavy sites cause it the browser to surrender, mostly only the offending page falls over and the rest of the browser is fine, but occasionally the whole browser needs a restart.
Interestingly some sites that don't work properly in firefox are fine in Chrome.
It's by no means a finished product, so if you use it and it doesn't work properly just go back to you're regular browser until the full release version is available some time next year...