It is not concern to me what you do or not do. TSA for the most part has different policies for different regions throughout the country. I was talking to a regional TSA supervisor at DAL a few months back when they told me they required a boarding pass to pass through security, even if I am jumpseating. He told me of the changing out of uniform policy at that time. So I do not know if it is a Texas region thing or what. The problem is if the TSA busts you on something and threatens to fine you, you get to fight it.

Perfect example is TSA tried to fine a Colgan CA $10,000 and Colgan $25,000 when he did not clear security at an outstation for a deadhead back to Houston. He flew 5 legs that day and the last leg back to IAH was a deadhead, so he just took a seat in the back and had a gate agent give him his ticket. TSA was notified that he did not leave the plane and clear security and it was a huge ordeal. The ended up dropping it because they called is a "gray area." So if you change out of your uniform, go for it, hope you dont get caught in a "gray area."