But Ian lets face it .....Masters are just that and far & few. The average gigging Joe is what I am talking about. It's hard enough to just play & control an arranger & all it's features & functions all at the same time. All this while jumping off to a joystick also. The pedal you mentioned could be a viable option for sure leaving your hand available to play & manipulate buttons, flip pages or whatever. Also, If I may, doesn't sometimes using a joystick etc conflict with the natural makeup of Yamahas SA voices?
BTW my S900 arrived & I'm in arranger heaven WOW!