I have already purchased this book, and I'm a big fan of Manning Publications in general. But I do acknowledge that their preview mechanism, where you exchange

I have already purchased this book, and I'm a big fan of Manning Publications in general. But I do acknowledge that their preview mechanism, where you exchange "points" for unscrambling either paragraphs or sections of a book, is both cumbersome and annoying. I'd much prefer sample chapters in the same way that Pragmatic Programmers does it. That said, it's pretty evident that Manning and PragProg have taken the lead in tech-book publishing that O'Reilly ceded when they went to all-subscription for their e-book offerings.