In a previous lifetime (pre-retirement) we operated a small company fleet and used some super singles with mixed results. Some drivers liked them, some hated them but no one really loved them to the exclusion of the traditional duals.
Wet and slippery roads seemed to be an issue since most drivers felt that the traction was less with the singles. Off road was the same reactions.
Since we were a small operation our drivers often changed their own flats and could not move tires around to limp home with a single tire on the drive axles or use a rear tire on the steer axle to get home. This meant someone from our shop had to respond or road service calls were needed to get things moving again.
From an aesthetics point of view, I personally like the look of the big super single tires, but hate the look of the wheels. I like the deep dish look of the traditional duals.
If a coach came with them on it as standard ezuipment it wouldn't be a deal maker or breaker, but I personally wouldn't spend the money to change to them for any current reason.
But that's just my experience and opinions. Neither of which are worth much in this debate.