Anecdotal, true, but a powerful one at that
Matt Brannan and J.P. Mitchell were dining in the Wafflehouse on Barrett Parkway at I-575 in Kennesaw at 4:45 in the morning recently when a scout for an armed robbery crew entered the restaurant to case it. At the time, Matt and J.P. thought he looked a little suspicious, as he was wandering around the small restaurant like he was looking for someone. Unknown to Matt and J.P., two cars full of armed robbers where parked behind the restaurant waiting for the scout's report. The scout saw that two of the customers were wearing holstered 1911 Springfield Mil-Spec .45 pistols, and he immediately turned and left the store.
Matt Brannan and J.P. Mitchell were dining in the Wafflehouse on Barrett Parkway at I-575 in Kennesaw at 4:45 in the morning recently when a scout for an armed robbery crew entered the restaurant to case it. At the time, Matt and J.P. thought he looked a little suspicious, as he was wandering around the small restaurant like he was looking for someone. Unknown to Matt and J.P., two cars full of armed robbers where parked behind the restaurant waiting for the scout's report.
The scout saw that two of the customers were wearing holstered 1911 Springfield Mil-Spec .45 pistols, and he immediately turned and left the store.
The would be robbers were caught
Meanwhile, conscientious Cobb County Police Officer D. Lowe had noticed suspicious cars sitting behind the restaurant in the dark and decided to investigate. He caught men with masks and rifles who had been preparing to rob the Wafflehouse. The criminals informed the police that they had changed their mind upon discovering armed customers and were waiting for Matt and J.P. to leave.
Emphasis mine.
Now, the Brady Bunch would have us just call 911 and wait for the police to arrive… after the fact.
Ironically, the police car was pulling in to the parking lot just as Matt and J.P. were driving away. In other words, had Matt and J.P. not been armed, the robbery probably would have occurred before the police intervened.
The open carry flip side to that was always: if it's visible then the "what-if" deterrent is lost, and the criminals know who to shoot first. (For example, the guy that shot up that city council meeting last year shot the only armed guard first.)