the other negative is the dated-ness of the styles pictured but obviously you can sew whatever style suits you. another weird thing especially in the pants chapter is that the models are sometimes posing in oddly sexy 90s ways. i'll update this post with a photo if i get a chance. it's really fairly ridiculous. Betzina also pimps her line of patterns for Vogue quite a bit, but that is also no big deal to me. YMMV.
one additional thing to keep in mind is that this is a sewing technique book, not a fitting book. i'm pretty sure Betzina has her own fit tome which i have not yet consulted. i own Pants for Real People and have browsed Fit for Real People. I just wanted to point out that Power Sewing is not a bible of everything you ever wanted to know about sewing and that other references are probably still necessary.
otherwise, the book is pretty great. comparing Betzina's method of lining pants with the other book i bought recently, her methods seem less complicated and technical, though i have yet to try either one, of course. i also like that she starts each chapter with a one page synopsis of her method of sewing each particular garment. it's handy if you just want a quick glance on construction order if you've misplaced the pattern instructions. which of course has NEVER happened to me. ahem.
if you are serious about garment sewing, i would highly recommend this book as a reference. it's definitely much more in-depth than a book like The Colette Sewing Handbook, which I believe is aimed more toward beginners. Power Sewing is the kind of book that will be on my sewing table at all times for easy browsing whenever i want to brush up on a technique.
and just so i can avoid a pictureless-post, here's some FQs i got from Spoonflower.