Yeah it's exactly as much of a cameo as you'd expect! In a re-release of Nocturne in japan, Dante was even replaced with another SMT character so probably not too important.

But having said that I wouldn't mind him recognizing Dante as that one guy he hired to be a training wall for his god slaying half demon monstrosity and vice versa. Everyone who recognizes Lucifer from other canons recognizes him as Lucifer here too, so I wouldn't mind another face to be like "aw shit look who it is" except actually (sorta)canon.