Let's face it, when are you going to actually need a steep turn?
Well, one scenario is when flightseeing over a glacier and one of the passengers (I was the passenger rather than the pilot in this case!) runs out of film.
You then need to do a steep orbit between two vertical rock walls whilst the punter changes the film, or you did before the days of digital cameras.
Contrary to how PPL students are taught to do steep turns this pilot
reduced power "to tighten up the turn" (so that he could remain between the rock walls).