In the US the british baritone is a rare instrument. When I've asked for baritone subs in our band I have to reach out to euphonium players AND I have to provide them an instrument. Literally nobody owns one aside from regulars in the band. There is not a single music school in this country, that I know of, that offers a Music Performance degree on Baritone whereas there are tons who offer Euphonium.
And if you think you can succeed on tenor horn, offer those services as well. The point was to make yourself attractive to the band, however that needs to happen, and then put the work in. That will come through way more than anything.
And the saying "David Childs does it better" will apply to literally any piece of music ever written. The point was, again, to show you know the lit and that you can play it.