Update:
Kanai Sensei continues to grow in size in the 32 months that I have owned it. It is one large mound of fans and as of today, I have counted 15 scapes in this clump and more seem to be appearing almost daily.
My first scapes for this year appeared around 6/1 which is about 5 days earlier than last year.
I did manage to get 1 pod from it last year, but there were only 2 seeds and so far, nothing has sprouted (seeds planted 7 days ago).