I don't think it's necessary. There are mentors of all kinds. What we recommend to our workshop participants is to have a board of directors, in terms of mentors, to have many different kinds of mentors. A lot of the women don't want to have only women mentors, because they know the whole system is male-centric and male-dominated, and particularly in entrepreneurship.
There was a program here in Ottawa, Lead to Win, and then Lead to Win for Women. The Lead to Win for Women died out because they wanted to have men as their mentors to know how to compete in entrepreneurship.