Since it does force you into recovery mode, I would highly suggest you do it. I partyed with a Thaumaturge the other day to do the kobold and the beautiful. Of course, being a Thaumaturge he ran out of mp. For quite a while he was standing idle not being able to do much cuz he was out of mp, so told him to sit and rest. My point in this being, if you are out of mp, and not triggering recovery, then why should anyone complain about running out of mp too fast? It all recovers with in seconds.