> The clean separation of RFC 3920 and RFC 3921 allows this. > XEP-0279 breaks this and causes tight coupling of these layers.
On the other hand, if your server implementation has a hard time figuring it out, don't support it. If all the stories are true, this XEP is a use case that will only be used in limited scenarios anyway (since all of our popular scenarios support more advanced features that don't require this). cheers, Remko