If the intention is, to produce a cake that´s sticking well to the chamber walls, why should I put a film of burned sugar (caramel at best) between wall and cake? Even with oil-cured pipes, I never really had a problem bringing a decent cake into the bowl sooner or later.
The chemical process of burning honey brings additional heat into the pipe-bowl, that´s for sure, but this might be irrelevant if the honey-coat is thin enough. In fact - breaking in a pipe using sugar and the like, seems to be a popular tradition. My own grandfather did it - and how could a rational argument beat that fact? But it´s maybe simply too much fumbling around for me.
I personal smoke a new pipe careful about six times filled toward one third, approximately another six times about half filled, and then the complete pipe, always trying to smoke it als cool as possible for another half a dozent times. In spite of the opinion that even this is an anachronism, it always worked for me this way.