Mike, yeah, you stink! I love this tip, and, I must admit to being downright bad smelling sometimes.
Extra clothing weighs a lot. I almost never bring any. My concession is midweight long johns for sleeping in. On a few occasions, I have needed to wear these, too. Solution? As you say, "Dont carry it!"
How do I stay reasonbly clean? Well, In the ADK's there is a LOT of water, and not too many people. A pot of warm water, a bandana, and a drop of soap will get me reasonably clean, when I start smelling myself. If I must, I can do my base layer or pants, too. All while wearing long johns, of course. I would not do this in town, but it IS the woods, right? Nobody takes offense. 'Corse, I never see anyone, either... Maybe because of the smell before I wash up? Hmmmm . . .