As an average home studio owner, I don't see the need for that thing even if I could afford it. Midi / usb cables, along with my keyboards, my soft synths, and samplers work just fine for me, and I have a computer already loaded with the software I like.
I bet if I totalled all the money spent on the computer and hardware, what is in the computer ( software ) and the keyboards, it still adds up to substantially less money than that beast. If I really needed to have a computer at a gig, ( I don't ), even if I bought a used laptop, I think I'm still ahead of the game.
I do like the idea, but not the price or the size of it.
AJ
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AJ