I have not, but did do a DVC tour. It is very nice, it was actually the resort we chose for our cancelled trips. And it’s very new. I would not be happy at all with the studio because of the beds, but otherwise I consider it comparable to the YC, with the pool being far superior at the YC.
Transportation is a pain though if they don’t use the gondolas- if they do it would be great for access to Epcot and HS. We just don’t know yet.
My problem with the move was they would not refund the CL portion of our stay. The YC was more expensive at CL. It was easy for me to compare because I had it booked earlier. I had an AP discount though, so they compared rack rates at the Riviera to my YC AP rate and decided it was an upgrade.