I come late to this discussion, and after an absence of many months.
Is it not true that the term WOG (favored by the Brits (oops) I believe) incorporates the term "oriental" in a pejorative/racist sense? (Worthy Oriental Gentleman). During my time in London I believe I recall the term used to refer to both those from India and Pakistan (although the favored slur for the latter was "Paki")