Have one that I rescued from a friend's compost heap about 35 years ago and it's still growing stong, despite some trials and tribulations. First was planted in the sun and then became fully shaded by a growing Magnolia grandiflora and bent over to an oblique angle, trying to reach the sunlight. No blooms of course. Moved to a location near the property line about 17 years ago. Some 10 years later, the neighbor, a grass & evergreen necklace "gardener", thinking it was a dreaded privet, cut it almost to the ground. It recovered rapidly and blooms every spring. Flowers aren't as showy as some of the species/cultivars that are available, but it does withstand our hot, humid summers. As your post mentioned, have never had a mildew problem.
Rb

So are you going to get one?

RB, are the flowers fragrant?

Elizabeth, I don't know if we are going to get one. They seem to be hard to find.