It's not a dumb question. I think it depends what kind of shoes you were selling. If they're high end athletic or custom shoes, then yes, it should help. For example, the past president of Barry Podiatry's sports med club (he started his top choice residency a couple months ago) worked at a high end running shoe store for a couple years. That work experience will certainly help him and his future patients.
Pods write prescriptions for orthotics, diabetic shoes, braces, etc. They also are asked to recommend shoe gear for athletes on a regular basis. Do you know what the best shoes for a high arched marathon runner? A ballet shoe that might help to prevent ingrown toenails? A shoe recommendation for a flat footed baseball player? etc? Those are things you should have a solid answer for if you are going to be a foot and ankle specialist.
I certainly agree that, as a pre-pod, shadowing is the best experience, though.