Thanks a lot !
I will recommend him to test ReaKontrol and let you know what he finds.
If he is not happy with that I will work together with him to get the extended protocol going with CSI (as this is what I feel provides the most future-proof versatility).
(I will need to ask Geoff about how to make CSI send the "HELLO" and work with SYSEx...)
(I finally will find out about "Instance Focus"
)
(As he is a guitarist and not a keyboarder I recommended the "A" over the "S", which of course is a lot more expensive.)
-Michael