[Haskell-beginners] How to convert a Data.Set to a Descending List?

Hello everybody, Is there a more efficient way to convert a Set to a descending list? I was looking for a function similar to Set.toAscList something like Set.toDecList . I feel first converting to a ascending list and then reversing may be in-efficient given that I actually don't need all the elements only a last couple of elements.. Thanks, Sunil.