I used it a lot at Chicago in the early '90s, then never again. I always liked the idea, but Jesus Haploid Christ was it ever a PITA to set up (I'm looking at YOU, Kerberos.)
My high school used AFS and Kerberos at least up to 2007 (when I graduated, and my first-hand knowledge ends). Agreed on the pain.
It's still used at CMU, at least.
If anywhere it should be there, since it's named after the those two Andrews. MIT was big into it back in the day, not sure about now.