Now that I'm finished reading, though, I don't find myself especially interested in pontificating about the book. So apparently this is going to be a really brief post. One-sentence plot description: A thief steals the identity of a whiny young nobleman and becomes the Swedish Cavalier. The style is part adventure, part fairy tale; the plot is a little bit Mr Ripley (though with a less psychopathic main character). I would read it again--not so much because I think it has further depths I've left unplumbed, but because it was such a pleasurable reading experience.
I think this would make a great movie. From what I can find online, it was supposedly slated for filming less than 10 years ago, but I haven't had any luck discovering whether it was actually made.