[PK]

Our current DF game is set in Yrth -- specifically, Araterre. So most of the clerics and holy warriors are Christian, Muslim, etc. The only real social change we made is that "pagan" religions are more common, to keep books like DF7 viable. However, even then, we try to draw gods from real-world religions like Hinduism, Shinto, etc. (Our Cleric of Commerce worships Ganesha, for example.)

Of course, we also threw out the "all casters are the same" in favor of DF's mix of wizards, clerics, druids, etc. -- and doing so has changed little of the setting from our perspective.