It's good to be able to get hold of a quality DVD of this after years of trying to catch it on TV. I first saw this as a youngster and while it hasn't stood the test of time perfectly, it's still an imaginative and original comedy horror caper.
Grace Jones, one suspects, was one of the central selling points for the film originally, but while she does a fine job (mostly non-speaking) of leading a coven of blood sucking harpies, it's other elements of the film that hold the attention. The set design and lighting are both imaginative. It might not be the only film from the 1980s to have used pink and green neon lights, but it's certainly a fine example of how to make the city by night even more alien and disorientating.
Following on from this, the way the neighbourhood around the After Dark club is set up as something of a world unto itself is a nice touch. The seedy hotel, the diner, the grungy street gangs who somewhat confusingly seem to be both vampires and in conflict with vampires at the same time... Taking this further, the vampires' backstory is mentioned in a scene towards the end of the film, although like the characters, is never really properly developed.
Still, the film has at least some kind of, er, logic to it. Vamp is mainly about visual style, and when you add in the fact that Keith Haring contributed to the look of some of the club scenes (Grace Jones' body paint), it's fair to say that this is a quintessential 80s horror film: All fangs and no knickers!