Yeah, I used one for that. Blue Bear is right!
IMO, it's horrible insofar that it colours the sound a sort of muddy turd brown, which, although only slightly noticeable on one track, adds up in a MT recording.
OTOH, I've heard a damn well produced CD that was done with a pair of AKG 414s, and a pair of Tube MPs. The guy who did that, though, had really excellent chops.