There are two of us, myself and another, that handle most of the fronting. We have all come to a consensus that it is easier this way to get things done, because there will always be someone able to say "We must go to this appointment at this time" or the like. We still switch fairly frequently, but for us co-fronting is the norm, and one of the two main ones are almost always front to some degree. It is more stable for us. Otherwise I doubt we would have gotten anything done, ever.