Likewise. I once copied down the whole exposition of Tchaikovsky's 4th Symphony's first movement. And I think I've learned a lot more following a score by Mahler while listening to it.
As a trombonist, I occasionally encounter alto or tenor clef; although, I can only read Bass or Treble clef.
As an instrumentalist, I find them redundant and annoying.
As an improvisor, I find it much more interesting to think in linear terms. If you dwell only on the chord your ON, you'll never find a good way to get to the chord you WILL be on... or the chord 8 bars from now. ;)
I need to play melodies. If I just outline changes, then I'll get real bored, real fast.