The Fluid Piano has potential...but I've yet to hear anyone do anything interesting with it.
And here is everything you wanted to know but were afraid to ask about the Fluid Piano.
https://www.thefluidpiano.com/
Once again, it appears no one has very well figured out what to do with it. As a jazz player I could see the potential, but the only album yet released is one of Indian ragas, which makes good sense, but is more like adding the piano to the general suite of accepted classical Indian instruments, rather than using this invention to...using the invention to...uhhh...???