I didnt know about this Power Toy, but i installed it because it sounded like the RH Window Switcher, and sure enough it does the same thing. It only lets you switch between 4 desktops, I believe its eight in RH?
anyway, here is a screen shot.
notice on the bottom the 4 green buttons and the green, the green will give you the screen i am posting, or window key + V. It looks promising, its one of my favorite features in RH.
WDYT?