S&M is a total page-turner of a book (as are most of Chuck Wendig's works, truth be told). I highly recommend this even if you're not planning on Storytelling or playing a Gangrel. It's just plain gory, bloody FUN, with a solid plot that's well worth your time. For players and Storytellers there are story hooks and character ideas galore, and a heavy dose of settings for Gangrels' Requiems. The Bloodlines and Devotions included here are promising, too.
tl;dr: Don't pass this one up.
[5 of 5 Stars!]