The Dr. Huey blooms and the absence of others suggest that the rootstock has taken hold with a vengeance, Toni. As for the climbing Charisma, which HMF does not acknowledge, I also have one and it is ridiculously skimpy on blooms. I'll pull it out as soon as I need the space for a better climber.
Yes, Sue, I'm sure that's how she sees herself.
I can't tell you a thing about scorching because mine's growing under that blasted scrub oak next door. As I recall, it was once quite tall, but living in total shade tends to stunt growth. It's now about 3 feet tall and puts out the occasional bloom, but it has never suffered from rust. Nothing really does suffer from rust here, though. Plants arrive with rust, but growing here quickly cures the problem.
Baronne Prevost suffered from rust here, but it suffered from everything. I have never seen a rose so vulnerable to pests and disease. In spite of this, it's also immortal. I dug mine up and threw it away, but it came back, apparently from some little piece of root I left in the ground, and it looks worse than ever. It's no match for black spot, rust, powdery mildew, curculio weevils, etc.