I don't know why you would want to get to metro. The right side menu is still there, slide over, click start. I have absolutely ZERO use for Metro. I think the Windows key brought up the "good" start menu.
I will buy Startisback when its finished, I used it and it is okay.
I did purchase Start8 by stardock though, simply because it was 5 bucks and it seems to have more support than Startisback will have (one guy dev'ing it right?).