I will have to keep an eye out and go see what I can find on the subject concerning when and if it will be released in North America. It definitely sounds like something I would love to try
I learned the art of Sumi-e from my art dealer. He is Japanese and is a master in Calligraphy himself. I use rice paper for painting the Sumi ink on. It's very grounding and teaches the virtue of patience. It keeps one's mind present. It takes about 20-25 minutes just to mix the ink stick with water in order for it to be in a liquid base for it to be then used with the brush. The technique is hard to master but since I already do calligraphy, I thought I'd give it a try.
I look forward to seeing the images!