Cane hardiness may indeed lessen the overall size of Buff Beauty, which I would be fine with. I have mine situated where it is protected from winter winds, blocked by the house and the lay of the land, so it may not be too badly effected by winter cold.
Sharlene, I love the way you train your roses so nicely and end up with such a nicely formed plant overall. I think you'll use that talent to create a real show stopper with Buff Beauty. I'm considering trying some sort of obelisk trellis for it- even if it does experience a lot of winter die back, such a young plant growing so large so quickly makes me think it will fill out a trellis either way.