Wisconsin is a goofy state, not always because of the liberals.
Now granted, we cannot carry concealed "on the body," but just about everything else goes. It's the same with gun use at your place of business.
In the mid-1980's I worked for a private telephone company and long-distance reseller. As they came to find out, there is a need for a locking, monitored "tool crib" and effective doors, windows and alarms. The place was a sieve. My boss decided to expand my duties to security, and gave me a written clause to carry concealed as part of my job description.
In a bizarre turn of events, I hired the very police officer who had arrested me some years before, to act as a loss consultant.
The boss and his wife (who was my direct supervisor) discovered they liked firearms, and became target shooters. By the end of my tenure, we were cleaning firearms in our private offices. The only "gun crime" you could commit was not showing the boss your new toy.
And again, this was in Madison Wisconsin. I carried a Detonics and Colt Officers ACP.