The most famous artist who uses a Wersi organ with a Ketron is Franz Lambert. It's a bit "back to the roots" because he began with a Hammond and has a rhythm unit on the left side
I was trying to let the SD40 styles play on my Yamaha with articulation voices and noticed, that Ketron has something, what is comparable with Mega Voices with one difference, the additional articulations are outside the usual range, so the sound is always compatible to live playing. They doesn't communicate it.
Hi Cman - The short answer is "it depends". Contact us at curt@immusic.co with what type of MIDI controller you are using and the MIDI config you are using on your Ketron, and we will try to help.