Hi Steve,
If you do not have problem reaching for buttons / registrations, you can skip MFC10 totally.
I always prefer playing arranger with foot controllers to lessen the burden on my hands, such as Roland FC-7 for Roland arrangers, Korg EC5 for Korg arrangers, Ketron FS13 for Ketron arrangers, and Yamaha MFC10 for Yamaha arrangers.
Using a properly configured MFC10 frees up our hands to play with more sophistication or less stress, with less brief interruption in some cases. The volume pedal of MFC10 is especially useful after it is programmed to be the master volume of Genos, giving you manual controlled fade in / fade out, totally replacing the Yamaha FC7 expression pedal. The disadvantage is obviously one additional piece of hardware to your setup.
I combined all my posts about setting up MFC10 for Genos in answering Vali's MFC10 questions:
https://www.psrtutorial.com/forum/index.php/topic,40058.msg334273.html#msg334273Since Intro 1, Intro 2, Intro 3, and Sync Start etc. buttons can be press ahead of time, they are not needed on the MFC10, only the other more frequently accessed controls are programmed on the MFC10:
Button 1: Start
Button 2: Stop
Button 3: Main A
Button 4: Main B
Button 5: Main C
Button 6: Main D
Button 7: Break
Button 8: Ending 1
Button 9: Ending 2
Button 10: Ending 3
Thanks,
Paul