968.24 Temporary questioning without arrest. After having identified himself or herself as a law enforcement officer, a law enforcement officer may stop a person in a public place for a reasonable period of time when the officer reasonably suspects that such person is committing, is about to commit or has committed a crime, and may demand the name and address of the person and an explanation of the person's conduct. Such detention and temporary questioning shall be conducted in the vicinity where the person was stopped.Such laws have being upheld by the Supreme Court seems to always hinge on the reasonable suspicion of a crime past, present or future, according to Terry. So they have to show that a bunch of guys sitting around openly carrying constituted a reasonable suspicion -- for an officer educated about the law of course, not an ignorant old lady.
The open carrying of arms? That isn't enough. No more so than wearing a red shirt and blue jeans.