I am a trombonist, but my son mow has my horns after an accident caused a Bell's Palsy which of course affected my embrouchure. Nevertheless, I am also a choral singer (low bass) and I sing regularly. I would hate to choose between listening and performing. If I had to, I would prefer singing to listening. Being part of the "corporate body," as Robert Shaw described it, doesn't have a counterpart in listening, however moving a performance might be to listen to.