I own 2 of these great little Microplane graters. One for freshly ground nutmeg and the other for freshly ground cinnamon. I love it for both. The comment that the product is overly-complicated may be true, but only because the pieces fit very tightly together out-of-the-box. After a while it becomes easier to open the various compartments.
As I said in the title of this review, I find the grater to work great with nutmeg (almost too good, since I end up grating more than I need). I guess that I should take advantage of the clear bottom and what how much I've grated. As for cinnamon, it seems to take a lot longer to grate than nutmeg, because the cinnamon bark is much harder than a nutmeg. So, for one I get too much, while the other I seem to get too little, but the effort is still very much worth the effort.
I would not recommend this for anyone who needs a lot of freshly ground cinnamon. But, other than that, it is a great product. Definitely 5-stars!