I have always used a mult-keyboard setup and at times included midi pedals (and the old Taurus pedals before that). One of the main ways it differed from my old B3/C3 days was the placement of the keyboards on top of each other. There was no way to get the right height between keyboards without covering up some or all of the controls of the bottom keyboard; uncovering them made the top keyboard too high for comfortable playing over a long period. Not having one set of controls controlling both keyboards made them always feel like the two seperate instruments that they were and further distanced them from the "organ" playing experience. Some of us placed them at right angles and learned to adjust to that awkward configuration. I have played gigs with as many as five keyboards and while entertaining for the audience, it was a nightmare to set up and a malfunction waiting to happen. In any case, no matter the configuration or setup, it never felt like an integrated instrument (organ).

I guess the closest one could come would be a full-featured keyboard controller on top and your favorite keyboard properly positioned on the bottom and completely controlled by the controller (sounds redundant), but we know how difficult it is to control every feature of a modern synth from a controller keyboard. But then again, why bother? We already have the ORGAN. If only it weren't so darn heavy and cost so much .

chas