I like having an excuse to hang around the female gyms... and it's a good way to train!
They really make it more of a hassle than it needs to be. Why can't I just walk in after the first battle and rematch them? You can do it with the Elite Four, and in some games you can; although you have to use stupid phones -_-
I was disappointed when I couldn't challenge Skyla or Elesa again in B/W or B2/W2. I hope we get this back!