“Directly?” It is a stretch to even say that this indirectly relates to his job. I doubt he wears the uniform while at his present job.
In my experience, a particular situation determined that you either wear the uniform or you do not. There is no “right” to wear it. Never heard of a “uniform optional,” situation.
The son of a bitch was “out of uniform” while he was in uniform.
I've read that he DOESN'T wear the uniform while he's on the job.