LCA: The X-men speak

I'm not quite understanding what you're asking, but I'm pretty sure I have this setup using xmonad, without any server-side fanciness at all. I have nine desktops (Alt-1 through Alt-9), and can independently switch to any of the desktops on any of my monitors (you use Alt-W, Alt-E, and maybe Alt-R if you have a third monitor to switch focus). Is this what you're asking for?