Hide taskbars on different monitors

The backstory is I have two monitors, each with 5 workspaces mapped to them. The left monitor gets workspaces 1-5, and the right monitor workspaces 6-10. I want the taskbar to show on both monitors, so I have the taskbar_mode set to multi_desktop. With this setup, both monitors show all 10 workspaces, except that the half which are mapped to the other monitor are always empty. What I would like is for those workspaces from other monitors to be hidden, without hiding all empty workspaces as taskbar_hide_if_empty does. In other words hide taskbars from different monitors rather than tasks from different monitors.

I can't seem to find a way to achieve this functionality using any combination of the current hiding options, but maybe I've missed something? If not, I'd be happy to try implementing it myself.