You can display two taskbars, but you have to cheat. Either use tasks.dll for one and taskbar3 (or whatever) for the other, or make a second copy of whatever taskbar module you want and hack the dll with a hex editor so it uses different settings & windowclass.

afaik there is currently no way to filter the tasks by monitor though. (and that might get tricky to implement in case you had a vwm too)