An overall charming comedy-drama that uses moral parody to poke fun equally at the old myths and traditions and the new, taking a look at slice of life efforts for good and for evil... with most people being somewhere in the middle.
Character design and actors' performances help to tell the story, and the sound design is a little experimental with some scenes with room-tone only, some with musical commentary verging on not trusting the script, performance and the images; and some with music that fits the scene and doesn't editorialize it.
While the movie doesn't seem to be a back-door pilot for a television series in the traditional sense, the character development and background of the supernatural characters presented are interesting enough that it could be possible for other feature-length Jovi and Lou stories.
It reminds me of some of my favorite memories of mature comic books, with nods to the George Burns "Oh, God" movie series, the first "Bedazzled" movie, world mythology, and even the long running "Supernatural" television series where they just made up stuff that resonated with mythology and religion as we know it.