I've done it here, but it's a lot more complicated than I thought it would be. Still, it's fairly easy - it just needs careful planning and a VERY good knowledge of command sequences.
Jestorius - you really need to read the Spruce manual. Command sequences are the toughest part of Spruce to master. I guess I have a big advantage over you guys in that I actually bought Maestro so I get technical support and the manual.
I would give you the outline here but the finished article needed 20 command sequences to get it working and I just don't have the time or the space... sorry...