I have one pair of glasses for every purpose now that I don't need true safety specs anymore. Photo reactive, progressive bifocals. Cycling, not cycling, reading, driving, at the beach, whatever. I don't "need" or want the sport glasses look. "Needing" them to look like professional cyclist sun glasses is the entire problem. Maybe you should examine that "requirement". Without that you have absolutely no problem. As long as you stay away from the mirror, what difference will it make?

If you insist however, how about a 2 for 1 deal at a mass market optician like Vision Works. Get your regular glasses and the special insert lenses for the cycling eyeglass frames as part of the deal. It won't be the base price, but I don't think the upcharge would be too bad.