As a former AF dude, acknowledging that it doesn't personally impact me, I have a huge problem with PT gear being treated as a fricken uniform. I can see if you have a bunch of guys in a training environment (OTS, leadership classes, etc) you might have PT gear that matches so that you look like a cohesive unit while running or training. But, after you are out of training and at your base I can't see what benefit there is in having everyone at the base gym wearing a matching PT "uniform". It sounds like that happens TDY and not at home base but even so I would be irritated at best with the situation. And from posts on here it sounds like commanders and first shirts are acting like you have to have the stupid thing ironed and pressed and a perfect gig line even when running or working out in your "uniform". There are even posts that suggest you should render a salute while wearing workout clothes if you happen to pass by a staff car (screw that!!!). They would have to get out and look me in the face and tell me what they expect before I'd salute their car while running or going to the gym in PT gear to work out. I'm all for rendering proper salutes and showing respect to senior officers but I'm going to have to throw the BS flag on this whole PT "uniform" thing!!
PS: On topic...I would also hate the idea of having to wear blues at all, much less every Monday. That would suck majorly, in my opinion. I only wore my blues about 4 or 5 times in 7 years of AD flying and that was for special staff meeting days or events.