Also consider Oak Street Bootmakers. A little more expensive than Rancourt, but a better return policy. IIRC the Rancourt trial shoes cost $50, which you only get back if you order. You could try on the ones Brooks Brothers sells though, I suppose. Also, OSB is goodyear welted and has a full length insole, which may be a plus or minus depending on your preferences.
Personally, I am hoping to find a proper fit in the BB LHS by Summer.