[xmonad] Virtual desktops gnome style?

In gnome, each virtual desktop in the pager is really a pair of virtual desktops if you have two monitors. So if you start a new session, then load up some stuff on both monitors, then switch to desktop 2, now nothing is visible -- both monitors are on a fresh slate, and so on for however many virtual desktops you have. I'd really prefer if xmonad followed the same behavior. Is there an easy way to code this? My haskell-fu is weak. Or maybe there's a contrib module that does what I want already?