I will definitely be selling sharwil scions in December, January and maybe early February. Beyond that, the scions are not good because the buds already have got past the point you want them for grafting. I have almost perfect grafting results in mid and late December.
I would be interested in Sharwil scions if you are selling them soon.
I grafted Reed around early July and it took with no issues. I just strip some leaves on the stem and took scion when I started to see swelling with end tip bud starting to push out. I made sure the rootstock was also pushing.