It was given a rightful place last autumn, since it was moved (as in gardens 50+ miles apart) twice. And it is taking off. I hope to give it a proper evaluation in a year! :] Well, one thing we know. It survives transplanting and unintentional overcrowding.
I have a young rooted cutting. It's far better than Abraham Darby, zero blackspots, and the thorns are safer since it's hooked inward and downward, rather than pointing straight out like Abraham Darby's large thorns. It survived many 20 degrees nights. Will report on the flower next year.