Strokeit seem to work fine with multiple monitors, and I'm not going to start suggesting the same gestures doing different things on the different monitors, since that would get very difficult, but one thing I would like to see is the abillity to have the on screen display shown on the same monitor as the gesture is performed. Or possibly just the option to have the on screen display shown on any different monitor.
This is also definitely something that I don't have time to do right now. I'll keep it in mind as I wait for some free time to crop up, but, don't hold your breath, as it's not the highest thing on my priority list right now. Good suggestion, though.