Try asking in the Antique Roses forum, a few people grow it. Barring that, contact K&M Roses, they might sell cuttings.

SoFl, Have you found a source for the fortuniana and/or are you still looking? One of my Cool roses has sent up a sucker off the graft. I think I will try and get it started unless you are really good at getting cutting to start. I am not the most successful at getting cuttings to grow.

The sucker is about a foot tall and is big like a pencil. I probably should have already cut it off, because I thought it was a sucker, but it seemed so high on the graft. But the leave look all wrong.... really long and skinny.

I think I will try and get it started... or you can try it and then give me back a rooted plant of it in the future.

Yes that's definitely a fortuniana sucker you have there. I haven't had much success trying to root them, but it's always worth a try :) go for it.