Sorry man; convenience, speed, and availability of CHAdeMo aren't near Tesla SC and not enough for practical long travel. And my 2017 model S isn't compatible with Saint-Romuald and LaPocatière CHAdeMO for some reason (still waiting for Tesla answer for more than a month), so it's very limit to come back from Montréal or do Québec city Round-trip with my S75D. So price is the last argument in favor of Québec SC. In fact, I drive everyday in front of the SC in Rivière-du-Loup and never use it, which I would if price was the main reason.
Also for people driving to the Maritimes from rest of Canada, Québec SC is a necessary step to ensure fluidity and convenience, which will be necessary especially when model 3 gets mainstream, obviously with the need to put some in the Maritimes per se (probably starting Moncton, Halifax, Fredericton...).