No, it’s not bad, but it is a bit overrated.
For the record, I owned the VPC1, and the ‘feature’ that got my attention was the so-called ‘authorized velocity curve’; turns out, that was a nothing-burger! and Kawai never bothered keeping up with subsequent Pianoteq versions; hence defeating the purpose of ‘the perfectly matched velocity curve’, because that curve was set to Pianoteeq 5 (I think), and never ‘adjusted’ by Kawai/Modartt to represent changes in subsequent versions, all the way up to P-8.
As for the action, yes, it’s good, but so is the NWX in my P-515, which, by the way, has built-in speakers, a great CFX, and a volume slider; all for the meager price of $1,500!
Also, I no longer want to be bothered by separate monitors, audio interface, monitor-stands, a humming computer, and a bunch of dangling cables; not to mention, the price associated with this setup.