I've had the same issue with MEM TSA. Tried to go through out of uniform with company badge. I need to see your boarding pass, she says. I had my nonrev ticket in my back pocket so I just pulled it out and showed it to her. I didn't feel like fighting it.

Same thing happened to me in MSP about a month ago. I was out of uniform nonreving with my gf. I get up to the TSA agent and he goes I need to see your boarding pass that you just put in your pocket (I printed it at the kiosk right by the security line). He went off on this long spill about how he has to check the boarding pass in case I get flag for "extra screening" on my boarding pass and how if they miss it they have to go to the gate and to extra screening at the gate. I was just sure whatever. Believe me if I see the extra screening on my boarding pass I will get through security some other way.

That said I almost always commute/nonrev in uniform. This way I can almost always avoid the boarding pass issue, the extra screening, and the nude photo booth. I am one of those that really really dislikes the TSA.