Maybe its just my big dick and all .. but I have to unbutton all my buttons with ALL pants. N&F goes the extra mile and I have to pull them down 3-4 inches on top of undoing all the buttons.
Trying to navigate the bathroom process through the fly is a waste of effort .. unless you're not wearing underwear. Trying to get everything out, and then back in with my belt on, is just way to awkward. Undo the belt, and everything is much easier.