Another Canadian here, Hamilton Ontario, I too would welcome the institution of a warbow society in North America.
I regularly shoot a 95 lb bow and just finished tillering a 105 lb from oregon yew, next project is 1/2 inch arrows instead of my relatively meagre 3/8s ones.
We have quite a large continent to cover but I believe interest in heavy bows is growing exponentially and will eventually yield shoots in many regions, that is my hope at least.