My current rig is just the MJPro, a Korg Microkey controller kb that all fit on a backpack and a Bose L1 Compact.
I'm a singing OMB and just waiting for the vArranger to have vocal input with processing/harmonization capability to replace MJPro.
I prefer just to lug a 15" 2-1 touchscreen laptop, a compact, lightweight controller kb and a Bose L1 Compact.
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Jim

SD90,Korg I3, KMA Liverpool,TC Helicon Play Electric, Fender Sonoran Guitar, vArranger, Bose S1 Pros, Bose L1 Compact, Aiwa Exos-9