I actually took a walking tour on April 3rd with my family and the question was asked. Apparently there had been a few male's in the windows but it didn't work out. I took this to be it was profitable/not enough business. I believe they said the number was in the single digits and also there was some negative feedback from the ladies workers too as I recall. I don't know that the guide said when this was, but I got the impression not more than a few years ago and lasted for only a few months......