Yes, we've already rooted one cutting of the corkscrew willow, and it is well on its way. Your article explains how it rooted and took off so easily! I had pruned it, and used one of the fairly big 5ft. branches to stake something else. Lo! and behold, a tree sprang up from that 'stake'.
She is also trying to root cuttings of other things in her garden like the beautiful Black Lace Sambucus and her Niobe clematis. I think the willow water will help her, and she can make lots of it using the corkscrew willow twigs.