Like most people with presbyopia, I use single vision "music glasses" that reside in the case when I'm not using them. (I have two pairs, that are kept in two different instrument cases, because of instances where I arrived at rehearsal 30 minutes from my house and the music glasses were in the other instrument's case.) If I had to read a rehearsal list off a board up front, I'd probably get "upside down bifocals" with a small distance segment on top. But I've not found, so far, that having the conductor fuzzy makes my life more dificult. Now if I could only have him see ME fuzzy...
I have spent time experimenting with my progressive lens glasses by moving them up and down my nose to where they work in the situation provided. To me, this is better than tilting my head and changing where I look through the lenses.