My guess would be to say that, yes, you would most probably have a different learning experience if you were to take a course in a good French crêperie school, however, more important is whether this is worth the investment?
In particular, I would say that you need to first determine whether your customers will really enjoy a genuine French crêpe (for instance, "sarrasin", or "buckwheat" in English - I think, might not be of the taste of everybody...). Maybe your customers would prefer more consensual crêpes, or with an American twist? In that case, it might not be worth the trip....
So I think the first thing you need to do, is determine your target customers, and study their preferences (this might change depending on state location, socio-professional profile, etc). Only then, you might be able to take an educated decision.
Hope it helps...