I find the ultra wides to be kind of useless for our work.
Now when using it for mixing audio that can be a different story.
Not my setup, I don't use Logic or Cubase or whatever that is... I use Studio One (local boys!)
I often have email/art on same screen next to each other, opposite screen with supplier open since its like hunting for Easter eggs now for stock and fast manager next to each other. No moving around windows to see something. Then ill have my 50 inch either on cameras or watching a movie/podcast/etc.
Our artists we did not do ultrawide though. But each have 2 - 27 inch wide screens and Wacom screen to draw on (Eriks is 32 and Kellis is a 24). Andrew does not have a wacom yet, hes been resisting it. Erik also has a 50 inch TV so hes effectively running 4 screens.