I think that it is completely unacceptable and untherapeutic and someone who does that should be struck off. I think that anyone who enters the profession should acknowledge that they have to make a personal commitment to be available to manage endings with clients, (unless they are ill or die). If they take on long term clients, I think they should ideally commit to live in one place to give continuity to the work. If they don't want to do that, perhaps they should consider a different profession.