I think they might be living in old times still thinking ppl will grace their shops, just choosing any person to do the job. So any photos that will lure a customer to their shop is a bonus, but will create an opposite effect if they don't have a body to match that picture. In some cases that does hold true for ppl interested in the random Punt in the search for hidden gems in the industry. But more ppl these days search for a body preference via picture and hopefully a face to match with their interest.
There is one thing I saw overseas that I really liked, photos in shop. When talking to the receptionist you can ask for the photo line up of the girls working that day, and see what they look like plus their faces. But this option is only in shop for private viewing only with the receptionist. Some places had a photo album others had an Ipad for viewing. Just imagine choosing one and after seeing the list will want to return to see the others that's peaked your interest. It is nice for the ladies to walk out to introduce themselves but with todays technology a picture gallery and if added a short video per person is starting to trend overseas.