Evince's GUI is still very messy on Maemo, and not particularly finger-friendly. The scrolling kinetics are a bit off, too. That said, it's quite fast, and reasonably featureful. As I stated in my previous post, you probably shouldn't use it currently unless you need its features, and don't mind dealing with its flaws. Evince on the desktop was pretty good last time I tried (which was quite a while ago), and it would be nice to see the Maemo port get some love.