If you Google search you will find a few forums posts on THT and the Chappy forum. Otherwise, Not much web chatter about the drives.
I remember seeing those 'plastic' drives on a boat when they first came out . . . and thinking - 'you gotta be s-ing me'.
It just goes to show you that engineers should not have cocktails during lunch hour . . .
In my 'new' boat search, I am considering boats with V-P engines/drives. I'm happy to share any tidbits that I learn along the way.
Although I prefer Merc over V-P, I would not hesitate if all else being equal, so shop away for your 'new' boat.