I've trained with Imamura Sensei on a few occasions during friendship seminars here in Sapporo which were organised by him. Imamura Sensei also demonstrates at my group's yearly enbu. He has also has invited the group I train with (which is a Daito Ryu group) to demonstrate at Hokkaido Aikido enbu.
Imamura Sensei is a real gentleman and has excellent, elegant technique. If I didn't have to work and look after my family I'd train with him more often
. I think the seminar will be a great experience!