I was pleasantly surprised with this film. Of course, the Ghost Dog connections are insane (frenchmen, a quiet hitman who acts like a samurai and takes care of birds, and gangsters who hire and then turn on him? Don't forget special keys to help steal cars). But that's pretty much where the comparisons end, fortunately. They're all pretty superficial. The actual story and characters are much different. This film is much more of a mystery/thriller in that you're questioning why the gangsters want him dead and then how he's going to stay safe from the police. The story kept me pretty invested throughout, and the pacing and flow works well.
The character of Jef is also really interesting and entertaining. He's, again, similar to the Driver in Drive in that he's quiet, calm, and collected, but he can kick your ass and/or kill you without a second's hesitation. And he does have a specific style about him, too. He's fun to watch, because you're never quite sure what he's going to do next, and I was constantly trying to figure out what was going on in his head. The suspense was great, even if there was never a sense of any physical danger.
But I don't have much else to say outside that. Jef Costello is a fantastically cool character. I don't think there's a lot of depth to the film, but like with Drive, I'm not sure there has to be. The character and the style are enough to carry the film. Though it does have kind of a shocker ending that I didn't exactly see coming. If you're a fan of noir, or cool antiheroes, check it out. It might be a quiet little film (hell, no dialogue is actually spoken for the first 10 minutes), and it certainly isn't perfect, but it certainly kept me engaged.