Ipad yes...
But touchscreen on a keyboard, no way, i dont have time to grab the pen everytime i need to make realtime changes. and my playing requires my 2 hands...
many people use stylus on the kronos because many of the items are so small, but just does not work for realtime changes... only for programming the thing before a performance...
That's clear, I thought it only concerns editing at home.
I would always prefer real buttons if it is about switching something during live performance.