Hey AJ
Erik Paulson has a DVD set Killer Chicken Wings. (Also Advanced Killer Chicken Wings, but I haven't seen that yet).
It covers it pretty thoroughly, using it as a counter to the bear hug, a counter to a double leg, countering the Kimura from the bottom, attacking the far arm from side control, how to use different grips, how to break defences, attacking the near arm and a few other bits & pieces.
Also, Chris Brennan has a DVD "King of the Kimura". I'm trying to get my hands on a copy now. Looks promising.