Replying to your lower comment:

>You could argue that it's been in debated use, but not common use. Otherwise there wouldn't be a debate...

This is just like people claiming "ain't" is improper English, or that you shouldn't split infinitives.

Any kind of "debate" is irrelevant because language prescriptivism is nonsense. There's no authority on high to say whether something is correct or not. If many people use a construct, it is correct because they are communicating with it.