I have one, nursery stock I bought three years ago. It is on its own roots, not grafted. The first thing I did (in early August) was bare root it and pot it in my chosen substrate.
It back buds on old wood, even low on the trunk and I am continuing with trying to drive the foliage down from about 4 feet above the ground to something like 10 to 16 inches. It is getting there, but it is proving to be slower going than I hoped it would be. Nevertheless, it is A+ for back budding.