I bought BK7-m module simply becaue I have so much Roland styles from the days I had G70.
Connected to KorgMA for fun, and it works OK the way I use it.
Left hand chords, and I swap right hand between Genos and MA.
Usually I'm playing only Genos, but it's fun to have some extra fun until a BigBrother Korg find the way to replace KMA.
Also looking at vArranger2, but not desided for sure if buy it yet.
Btw, the module is nice if have an MIDI Accordeon as well.