Fascinating discussion,

To me, the "brand" argument falls flat when you remember the majority of consumers would easily mistake us for a bell hop.

You want brand image? Make sure your uniform fits (however many breasts), shine your shoes, look and act like a professional. I can tell you that I have a much easier time doing that in a modern single breasted jacket than a 1930s horse blanket.

To each their own, I guess that's why they are giving us the option.