Installed it.
The main UI looks like someone really really likes Opera. I mean, that button/tab layout is so familiar it's basically the same. Freaky. If I was any sort of Browser warrior I'd call it shameless, but I'm sure it's just some API that more or less mandates how these Titlebar overlays work.
I also hate them. Let me drag around my Windows, please. Why u put Tabs where grabbable area? WHY?
Sticking to my preferred browser still, but I guess it's nice to have. Gonna set up dat sync, finally. Because Syncing your bookmarks etc with the cloud is awesome.