I've worked in offices where Skype or Hipchat were used exclusively. There is nothing that Hipchat can offer for which I'd give up audio and video chat. You can

I've worked in offices where Skype or Hipchat were used exclusively. There is nothing that Hipchat can offer for which I'd give up audio and video chat. You can say people are free to arrange a Skype call if they want, but when a text-based chat program like Hipchat is the office norm, no one bothers to use any other medium. Hipchat is great at what it does, but without audio and video support, I'd never deploy it in the office.