This is exactly why I prefer plain-toe balmorals (in calf, as I don't like patent leather). The cap-toe balmoral is so associated with business wear, but I feel the plain-toe does not suffer from this association, and is also sleeker (which is desirable in evening wear). I also think you can get away with wearing them to work if you absolutely had to, unlike patent leather. Wholecuts might be a viable shoe option as well, though a bit less conservative.
+1. I despise patent leather, so it is either opera pumps (good luck finding those in an 8EEE) or highly shined plain toe balmorals which is what I currently wear. Given how many people show up to black tie events in loafers, bluchers, etc., there's just no way I'd ever feel self-conscious about not having technically proper tux shoes. Everything else about my black tie rig is purely traditional and correct, which is why I don't mind replacing one shiny black shoe with a different shiny black shoe.
I try not to wear them to the office but appreciate that I could if need be.