Jeremy Silman in his book 'Silman's Complete Endgame Course' makes the statement that this Endgame isn't worth learning as it will only come up at most about 3 times in one's lifetime or possibly not ever at all. But it shouldn't take long for most to Master and it also teaches useful Bishop and Knight Co-ordination techniques. So I think it is worth learning. I remember sitting down about a year ago and just practicing it for an hour against Fritz. That was all it took for me to become proficient at it..
I think it was in the most recent Olympiad where even a player rated over 2400 didn't know how to win such an Endgame! Which must have obviously been rather embarrassing?
I played such an Endgame against one of my students shortly after I learned it around a year ago. It will definitely be useful to look at for anyone who doesn't know how to pull off such a mate. All my annotations are from a year ago as well and done for my student:
There are also some useful videos on youtube.com demonstrating this Endgame.
ian