Old post I know but...
For what it's worth, at least in my neck of the woods, pectic enzymes are alot cheaper than papayas. Averaging $4.00 or more. I'd stick with the pectic enzymes. Better results and less hassle(mess).
Just my 02 worth.
I haven't made a straight juice wine, but I just about always use fresh or frozen juices for the base of my fruit wines. I'll have to try that out. Like you say, the combinations are many.