More than a month later than Mark, I finally took my Nino apart to see how cleanly it was around the chute area. It proved a convenient opportunity to snap some pictures that should further illuminate the great design of the grind path on the Nino.
The first thing that's really apparent is how tiny the exit chute is. The photo below makes it difficult to see, but try clicking on the Flickr link in the description and then selecting "All Sizes." You can see one of the sweepers there, and how it passes right up against the opening.
Front Panel Removed (Flickr Link)The next photo shows the slide parts. The part on the lower right is the interesting one, it's a sheet metal tab that covers the exit to the burr chamber. It causes the coffee to be extruded out of a very fine opening (not unlike the Baratza Vario's), which seems to be the anti-clumping secret. I imagine that the absolute preponderance of metal in the design has a huge part to do with eliminating static.
Slide Parts (Flickr link)Finally, here's the slide attached to the grinder body, showing how the tab fits.
Attached Slide (Flickr link)