I really like this one, especially the use of mud.
I did about a half dozen wedge grafts last weekend, KB, Cuenca Giant Black Unk, Zucchini and Genovese Nero on rootstock that included potted Beall, Petit Negri, Celeste, LSU Purple, Sicilian Red cultivars.
I think they turned out well but only time will tell. I just love this stuff!