I did mine last weekend.  My scion wood was getting overdue, and I'm not going to be available for a couple of weeks, seemed like a good window.

I grafted bark grafted Matsumoto Wase onto my PCNA tree that was supposed to be Izu, and now has Izu grafted to it from last year.  I also did a whip and tongue as a backup to a multi-grafted tree that had started out Fuyugaki, now has Nikita's Gift, Sheng, Izu, Giombo, Coffeecake, and hopefully this Matsumoto Wase.  The picture is taken before I wrapped everything from the rubber to tip with buddy tape.

BTW, the Izu growth has a reddish tinge to it, very distinct from whatever, probably Jiro the original tree turned out to be.  It also leafed out a little bit later.