I dunno Diki, all I know is what SK has told me. I do know that Korg Italy will not release ANY sysex data to anyone...been that way for years. It's why we cannot get a PC editor developed by a 3rd party as the sysex is needed.

So I suspect that is the drawback...Plus, having it run native on the keyboard is far better, imo, than the cobbled approach of the Yamaha format...