I was a little sleepy when typing that :)
The switch would be from a Leslie that has 3 positions, slow, off, fast so that would make it a sp3t because it has 4 terminals? and yes in VB3 all the midi parameters are controllable
I will read up a bit more on that site.
But it seems it's really simple since of it's function, however making it is another, but I'm not new to doing projects just never worked from scratch on midi before.