Could you describe in more detail exactly what you are looking for?
It seems you can detach the display. This is the way you would move the G-Force display over to the secondary monitor (just drag it over there and then double click it to make it go fullscreen). Then the main MC UI will be "left" on your primary monitor and will continue to operate normally. If when you drag the detached display over to the secondary monitor, G-Force goes "blank" then you're dealing with a video card driver issue or a video card that can't handle 3D acceleration on the secondary display (many older laptops have this issue). Try updating your drivers, or switch the secondary display to be the primary monitor in the Displays control panel.
However, the Playing Now window on the main MC UI will now simply read "Display is detached" and there isn't a simple way to get it to show a separate "visualizer" (or Track Info plugin), if that's what you are looking for. You could make two separate zones and then synchronize them, but that might be tough to pull off properly (I've never tried so I don't know the full implications). MC WILL work on the primary monitor in Theater View mode, though, so you could use the new-and-improved Theater View playing now for your Track Info display, if you wanted.
Once you detach the display, and put it somewhere, MC will remember where it was for next time. So, if you set it up this way and leave it like that, next time you detach the display it will automatically go over to the second monitor and go fullscreen.