Looked this book over in the local store, but still waiting to see what ends up being PFS legal before buying it.
I have a boon that lets me play a grippli in PFS, and I really like the fluff of the Fiend Keeper Medium archetype. Medium is a class I've been looking at lately, because I like the concept. But it's a poorly designed class, so it's hard to come up with viable adventuring builds, other than strength based Champion builds, and gripplis have -2 strength. I'll have to give that one some thought to come up with a decent build, under the assumption that this archetype will be PFS legal by the end of the year.
Also glanced over the kitsune, tengu, and nagaji options, and found a few things I might want to try out. As long as PFS doesn't reject most of the book, I'm sure I'll pick up a copy in a few weeks.
Even if PFS does reject a lot of stuff, I want to try out a lot of stuff in this book in my non PFS games.
Although I will admit that I am eagerly awaiting what PFS makes legal in here. I have a few builds ready and waiting on this book.