An excellent academic review by @sygarte in PSCF just came out.
Like most things written on the topic of Adam and Eve, the ideas behind The Genealogical Adam and Eve: The Surprising Science of Universal Ancestry (GAE) have already proven controversial in a number of online fora and other venues.
Was it really that controversial? 
I think that the important accomplishment of this book is the weakening of previously unquestioned presuppositions on all sides of the debate. Before publication of GAE, Christians could take various noncompatible positions on the origin of humanity, and dialogue was difficult. This book is proposed as a starting point, rather than as an answer. The author writes at the end of the book, “It is however a starting point for an exchange, a place where we might understand and embrace our differences.”
Christians with opposing views on Adam and Eve may not come to an agreement, but new spaces for dialogue have indeed been opened up. For this, Swamidass deserves our appreciation, and the book deserves to be read by all.