Hi, I got some persimmon scionwood. contact me if you're still interested. I got several varieties.
Free of charge, I have the fig varieties you've mentioned.

Bass

Bass:
I have wild persimmon on the place, and I planted Saijo and Tana Nashi last year. In a year or two I will have graftwood that I can use.

What grafting technique do you (or you, Persimmon Bob) find that works best on persimmon?

I've used different techniques, but a simple one I used with graft success. it's specially useful when the scionwood is smaller than the rootstock.
These photos by Joe Real from Davis, CA.
grafting

and this is my grafting tutorial using whip and tongue, it also work well with persimmons. trees of joy grafting

Bass

Do you have Asian Persimmon Scionwood In Atlanta area ?