Last week I paxed from Sydeny to Melbourne for my neices christening, and even though I was off duty I wore my full uniform consisting of standard white epaulette shirt, 2 bars, wings, blue pants and of course appropriately displayed ASIC.
The cabin crew on that flight were more than accomodating and thankful that they had an aviation porfessional in the emergency exit row, secure in the knowledge I had the capability and experience to direct pax in an emergency!
One of the passenegers next to me even asked me some questions on the briefing card and I helpfully pointed out some details!
So, I think that there is nothing wrong at all, in fact it is beneficial for professional aircrew to be appropriately identifiable when paxing on RPT services!
You would know bugger all. Have you done the safety and emergency procedures course for that type of aircraft? Have you be trained and assessed in how to conduct an evacuation?