  Recently Alexandersson and Getachew proved some multivariate generalizations
of a formula for enumerating signed excedances in derangements. In this paper
we first relate their work to a recent continued fraction for permutations and
confirm some of their observations. Our second main result is two refinements
of their multivariate identities, which clearly explain the meaning of each
term in their main formulas.
  We also explore some similar formulas for permutations of type B.
