Well, he uses one of 2 side switches on the RH expression pedal. The other is for lots of good stuff, like we do on arranger. Actually you can do exactly as he does with arranger as we can control the regs with a footswitch too. The LH expression pedal is for Wah, glide, slide, pitch bend etc.

You can buy one of those for $5k - $10k depending on the model + shipping to USA (door to door), no US warranty though.

Like Bachus said, there are differences in that organ and making one out of Genos or other arragner, lower kbd and pedals. I think however you can get a LOT of it using a arranger setup.

Yep Marco is very talented, I have been following him for a long time, OH he does not come with the organ from Japan!
Darn!