I, as a sissy, love the flat front, and I wear it proudly at the gym in my yoga pants or my lady's slacks. My CB belt does hold everything back and nicely neat, it took me a while with fitting to get it correct, but once I did, I loved it.
When I swim in my one-piece suit or do the elliptical at the gym with my yoga pants, I don't hide the smooth front. When I do my stretches and lay on the floor, it really shows. I get a few ladies who look and stare, trying to figure out why there is no bump. I love under my pants at work having no bump or sight of manhood and with my CB belt in the bathroom, I can not see anything either, just sit and go.