First, the Little Darling X Yellow Magic seed parent is Mr. Moore's 1-72-1, the sister seedling to his Rise'n Shine. Shadow Dancer is a nice striped climber. I haven't really raised many striped seedlings. Though stripes are interesting to me and the rose Mr. Moore named for me is striped (and mossed!) my focus is actually in another direction: thornless and disease resistance. As there aren't any listed offspring from Twister and I honestly don't remember Sequioa using it, who knows what to expect? Watch it to see if it sets self set hips. if it does, try planting them to see how good a seed parent it may be. There is good fertility behind Twister on both sides of the family, so you may just be in luck. Good luck! You'll have to document what you've found.