I obtained two fans of Ashwood Dark Side from Petal Pusher Daylilies in September of 2022. I wanted a dark one to replace Night Wings, which never did well here.
I planted Ashwood Dark Side in a bed that gets filtered sunlight, hoping to minimize sun bleaching, and so far that strategy has worked. The blooms are lovely and dark, and they stay that way all day.
As for rust, I would characterize Ashwood Dark Side as moderately rust-resistant. It does get rust here now and then when conditions are perfect for rust, but it never gets overwhelmed.
The plant is slow to increase and has not bloomed prolifically. Maybe this will be the year Ashwood Dark Side takes off--I hope so.