Very, very nice!
The only thing I'd maybe not like is it looks kind of cluttered.
However, this is just judging from that 1 photo, I didn't read about it or look at any other photos of it.
The theme I have currently has a ton of functionality like that, only when you leave one dock to go to the other, the one you are leaving disappears. very cool way to declutter the beautiful wallpapers. Maybe this theme does this too though, as I said I didn't read.