Installed it and found several useability issues that were show stoppers for me.

wbar is a nice idea visually, but not being able to restrict launched applications to a certain area of the screen meant the wbar got occluded by applications and then you are up for minimizing your apps just to launch another app from the wbar.

Creating a new user account and logging in was an excercise in "Where did that extra Gnome Panel come from"

So gOS Beta really is Beta and I wouldn't go near it until they sort all the annoyances out.