Based on my experience, the BK7m is too cumbersome to use live with anything but a dedicated controller. I use one as a drum machine in practice, recording, and drummer-less rehearsals. I have it midied to a Roland VP770 but trying to control it and the KB without their interfering with each other is tricky, to say the least. Controlling it locally with the data wheel is a real PIA. I have a Fantom G7 but have never used it with the Bk7m but I'm guessing the same problems would arise (although you would have more control with the Fantom than with the VP770).
Anyway, hope you get it sorted out.
chas
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"Faith means not wanting to know what is true." [Nietzsche]