I agree with the WTF. The problem is that if there is an attorney with the city or county that tells a chief/sheriff that it is lawful to stop people for openly carrying then they have an opinion that differs from the AG. Neither carries weight of law but the local attorney's opinion would more than likely give the department and municipality immunity.
Constitution of Wisconsin:
Right to keep and bear arms. SECTION 25. [As created
Nov. 1998] The people have the right to keep and bear arms for
security, defense, hunting, recreation or any other lawful purpose.
[1995 J.R. 27, 1997 J.R. 21, vote November 1998]
Doesn't matter what the police chief is told by his lawyers, he is required to uphold the constitution of his state, and he is required to be fully cognizant of its contents. If a lawyer tells him he can arrest someone for walking down the street with a gun on his hip, particularly in a state that has made concealed carry illegal, the chief should tell the lawyer he is wrong and should then explicitly tell his officers not to do so unless they see an actual crime take place or clearly about to take place.
It is legally impossible to outlaw concealed carry and also arrest people for disturbing the peace for openly carrying handguns in a state where the constitution clearly states that the people have the right to bear arms for security and defense. If you are going to arrest them every time they do so then in fact you are saying they don't have that right, and THAT is unconstitutional, and that is why any police chief in WI that allows his mean to stop or arrest individuals for simple OC should not have immunity.