I can't speak for the aircrew, but the maintenance guys definitely shoot back and forth. Whenever we're on TD or course with the guys from Comox we put the gears to each other. Mostly just about the "quality" of maintenance and the way things get done between the two bases. We have far more techs here than the folks out west do, it's all in good fun.
We've got 2 of the Arcturus left flying, 119 was retired to be used for training. At any given time we have a few frames down at IMP getting TLIR(3rd line maintenance), or upgrades performed.... we never have all of the Auroras here that we own on paper.