Yes. And I carry a belt mounted clip-on holder next to my gun, not a wallet badge. If my gun is concealed, so is my badge. If my gun is exposed, so is my badge. Badges still carry some cultural cache that ID cards don't, and it's just one more way to help identify who I am if shit goes sideways while I'm off duty. A badge in the hand reduces (not eliminates, reduces) your odds of being targeted in a blue on blue while you are in plain clothes. A badge on a neck chain is next best. A belt mounted is next best. I can't recall the original source of the study, but I know that numbers of holes in realistic targets in a shoot house roughly confirmed it. A real metal badge with some shine to it center mass or in the hands (both where we are trained to look) kept a lot of holes off the target vs the belt mount guy.