Dennis, once again you completely misinterpret what I'm saying. Take a long look in the mirror my friend.
Yes, having Karma run from the keyboard's own buttons is optimal. But that is an apparent no-go. All I'm saying is, if the choice is between a laptop and a controller surface, and no Karma AT ALL, surely you can see the point of a laptop?
Personally, whether a soloist or in an ensemble, the capabilities that Karma adds (jeez! you bought a $3000+ keyboard to get it!) ought to outweigh setting up a few more bits of kit?
Maybe not? Not exactly a ringing endorsement...
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An arranger is just a tool. What matters is what you build with it..!