Well, then the XEP should say something about that or even better that this protocol should be used instead of XEP-0092 since it's generally bad to have two standards with the same or nearly the same purpose. In the end the target of a standardization organization is to have just one protocol for a certain purpose otherwise there is implementation overhead to remain interoperability.
Give Peter a chance, he only wrote this less than 24 hours ago...
Richard
