There is not any good reason for having a CCW badge. NONE.

That said, there are many people that carry badges other than LEO. City bus drivers, Electrical inspectors, Fire Marshals, Process Servers, Private Investigators, Private Security and etc. These people are not representing law enforcement and not being charged with doing so. If one is out stopping vehicles or shaking down people on the streets, then that is impersonating LEO.

A badge can get you shot and a badge can prevent you from getting shot. It all depends on who is holding the gun and their concerns. If a CCW holder has shot someone and is over their body holding a gun, they best have something else that will cause a LEO to hold fire. If they are in a bank being robbed and a badge is shown, it can get them killed.

If one is carrying concealed, then there is no need for a badge.

The CCW badges were the idea of someone to make a fast dollar off the wave of popularity of concealed carry.