Mouse-wheel change workspace

[Mr . X]

I'm not sure if this has already been discussed or not (maybe I missed
it), but a feature that I've always loved from WindowMaker/Enlightenment
is the ability to scroll the mouse-wheel over the root window (or even
the toolbar maybe?) and change workspaces.  It really grows on you. 
This doesn't seem like any kind of bloat, and I assume it would be
fairly easy to implement, that's why I ask.  Are there any plans for
something like this?