Great combination of a free flowing illustration with the more sleek and constrained typography and text layout. It allows the reader to appreciate and focus on the art while the text is easily readable and gives the eye a rest from the illustration.
I'm only responsible for what I say, not for what you understand. Although as an author I am responsible for making readers understand--a reader who doesn't understand is an unhappy reader. (And there is some value to leaving some questions unanswered.
Aha My first time skydiving my tandem instructor told me he had a previous 'incident', a joke of course, have to say it still made me laugh although I was about to throw myself from a perfectly good plane for the first time in his trust