For me, I see my throne as nothing more than a anchor point to keep weight off my legs, but I'm on the edge, leaning into the drums. It may have something to do with traditional grip style, playing conventional - left hand on snare, right hand on hihat - on a conventionally oriented drum set. Since one's upper body turns into the hihat, thus putting the CG point more forward.
(DW needs a glossary thread as a sticky for reference, with a place to add new terms like conventional orientation, conventional playing style)
This also begs the question, do thrones with back rests generally find homes under matched grip players, since trad players would find the back rest in the way of their elbows? Food for thought.