I find it often winds up clearer to pull things into multiple case statements, especially as the code grows more complicated. That said, there may be a difference in what we 're meaning by "most of the time," so let's be more precise. IME, most Haskell programmers will encounter use cases for multi-level matches (beyond simply pulling the first couple elements off a list) a small number of times per week (maybe month, depending on the programmer), whereas they're typically writing a case statement some number of times per hour.
I wouldn't call it a party trick, but I also wouldn't say it's the most common use of case by a long shot. I don't expect that you disagree.
I wouldn't call it a party trick, but I also wouldn't say it's the most common use of case by a long shot. I don't expect that you disagree.