Hi Cass,
As you might know, I use my KMA for gigs all the time but I don't use SMFs.
That said, it is my experience that everything you want to do on a gig with a song needs to be setup prior to the gig. Other then changing RH voices and variations I don't find the KMA to be user friendly for other tasks for live playing. I still love the little beast and for my needs it does a great job.

Wish I had an answer for you.

Deane