I'm guessing, from the sparsity of responses, that folks aren't using powders very much. I have just some musk powder which I use primarily for the, shall we call it, "panty region," especially during warm weather. It make me feel fresher without running interference with whatever scent I'm wearing, plus, it doesn't convey that "baby changing table" quality of regular powder. If I would come across any other simple-scented powders that complemented my frag wardrobe, I'd certainly add them.
Hope more people contribute to this discussion with their experiences and recommendations.