Looking at the responses so far makes me wonder if "Not yet" or "no, but I'm considering it" should have been an option, quite a few responses have been to that effect.
My group had a variation of that rule in effect during in-person matches before we even knew about the official Enhanced Flamer option. It's a nice, simple and noninvasive way to make flamers and Firestarters more interesting, and honestly makes more sense to me than the either-or version anyways.