I'll admit... that costume just doesn't make sense to me. If he's trying for undercover, secret, not-superman.... then what's with the GIGANTIC S shield? If he's trying to make his own identity... I don't see Clark going 'black'. It's just not his style. It was a major plot point when Eradicator/Superman started wearing 'Executioner-black'.
So yeah, it just seems like a goofy 'redesign'... but without any logic or character personality attached.