This turned out to be sort of an eco-dystopian romance, not really what I expected or hoped for after reading and enjoying seven other science fiction books by the author. I probably should've expected a romance as the novel was chiefly about two main characters who were adversaries at the start; I mean, they spend the whole novel together. C'mon, man.
Howey IS a great storyteller. I thought the ending was good, and this was worth reading.