* First, as many of y'all know I played mainly baritone saxophone and I took lessons from a Rascher student, as well as a student of that student. One of the things I had to play in my college lessons was Rascher's 24 Intermezzi. It has key signatures with double sharps. I'm just glad it was in treble clef so I didn't have to transpose.
* I played and conducted in a variety of church bands/orchestras/ensembles. I played bari and alto off of lead sheets, so I really am used to tossing in sharps. Hey, the tenor vocal part sounds pretty decent on alto, too, especially if you blend well.
* The biggest, baddest piece I played in competitions and to get into music school (I didn't succeed at that, but still took lessons from the prof) is Bach's Cello Suite #4. At one point, I tracked down an original copy of the Bach manuscript and played off that. Again, more bass clef music for the bari sax.
Speaking of clefs, though, the folks that we should have the most sympathy for are the bassoonists: they have to know treble, bass, and tenor clef -- and "tenor clef" can also be movable ....