I certainly knew about the connections between Go (and so very much other stuff at Google) and Plan 9. I was surprised, at the time, to see the OS itself in use in a production role. Just another example of unexpected tools getting the job done.
If I had a need for it, or could justify the cash, I'd get one just to play around!
In the end, the workstation was so completely fused to the printer I'd end with a car-sized workstation.