Pretty sure there aren't any rules against it, just a few people have specific pet peeves against what you're trying to do here. I don't care, not gonna ruin my fun to accommodate something a little different (not that I'm in your realm), so if everyone you care to play with is cool with it too then I say go wild. I mean there's even an opt-out for it in the form of IC disbelief, so whatevah.
