Welcome, friend...!

Yeah, it's a real shame the G70 can't send the VK Organ section out a dedicated output (hope they put this on the NEXT G-series, as I've got a Pro-Motion, too), otherwise you might not even need the XB-2 (I don't think the VK is as good as the new XK Hammond's, though!)...

Sounds like a cool rig, let's hear it once you are up and running.
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An arranger is just a tool. What matters is what you build with it..!