By "in flux" I was intending to vaguely refer to the problems with the protocol which has led Firefox and Opera to ship with WebSockets disabled. I'm guessing we're probably going to see some changes to it in the future. Hopefully sooner rather than later.
We've been using websocket for over a year now on Mibbit. I think around 20% of our users currently do websocket.
Fair enough to wait and see though, hopefully they'll do it the same way everyone else has.