I too am interested in controlling external hardware…it’s great to set an iPad on top of my analog synths and sequence away!
I noticed an issue with the way that Cubasis is handling MIDI Thru and MIDI channel assignments for external devices, but SB is aware of it and AFAIK it’s on target to be fixed in the next update.
Dealing with a massive DAW setup is one of the major detractors of dealing with (any) external gear, and for me Cubasis solves this brilliantly.