Geography is still a big thing in disc golf. Legacy is non-existent here and Prodigy is rarely seen, but Wizards are still very common. They are not as common as they were 10 years ago, but there isn't just one disc cutting into its use. I see Judges, Wardens, Deputys, P2s, Pures, Crowns, Pilots, and the hipsters are throwing Lunas. Since the move away from the Wizard is so spread out amongst other putters, the Wizard is still the most common putter to see.
I guess I can see having a "driving" putter as I keep a pretty fresh version of my putter for drives while my putting putter is a beat-up old driving putter. So I kinda do the same thing, but I don't switch molds or get a premium plastic version for that. Throwing a different mold or having a premium plastic version would mean I wasn't beating anything into a future putting putter.