I received Scatterbrain as a bonus in 2009. It got 2-3 way branching with about 8-10 buds per scape. I don't remember it multiplying very well, but to be fair, it was in an area where there was a tree about 20 feet away and it did not get full sun. I liked the height to bloom size ratio, 32" tall, 6" bloom. I think that is the perfect size.
It has not shown evidence of rust according to the pictures I have of it since the summer of 2010.
I have been making room for newer daylilies, and since I have another double daylily that is similar to Scatterbrain (Savannah Debutante), it went to live with some of my co-workers. I may regret it, but I know where it is at!