Rhona-Mae Arca August 31, 2013 Martial Arts, Interviews, Recreation Calgary Omatsuri 2013 Interview with Dave Rathnow Rhona-Mae Arca August 31, 2013 Martial Arts, Interviews, Recreation My Calgary Omatsuri interview with Dave Rathnow sensei of Shin Ken Kai Nobara Iaido Club of Calgary. We talk about the martial art I started to learn - Iaido - and the differences between the two main styles practiced today.