"In Wisconsin, the Supreme Court ruled that the concealed handgun prohibition was unconstitutional insofar as it applied to a personÂ’s home or place of business, but was constitutional as applied to all other locations."
I'm not sure that I agree that's quite what the court ruled. If I remember correctly, the court did not say as applied to "all other locations." It just said that a person's home and place of business are the most clear examples where an overly strict application of the CCW statute would be unconstitutional. It held out that possibility that there may be other times, places or circumstances that may entail similarly unconstitutional applications of the CCW statute. Those would be identified on a case-by-case basis.