If somebody feels worried about an inadvertent, unintentional display of a concealed weapon, and a "badge" alleviates this fear and enables them to carry more confidently, why not? As long as the badge is concealed as well or better than the weapon. Silly? Sure.. But.. Who's it hurting?
IMO, you should not carry if you're not confident about your concealment. A badge is not necessary... however, what's the harm?
If a person thinks it's a batman badge, they already have other problems and a badge is just a symptom.
No, I don't have one and don't plan to get one... Just being devil's advocate.
If I was to get one, I like this style...

