My book was reviewed by Christine Wiegand for the SAP Design Guild. She liked it and said it was long. I'm glad about the former and can't argue with the latter. ;-) She liked the practical aspects of it and correctly identified that there should be a shorter description of some of the techniques. I agree and I've thought that there's a place in the market for "The Guerilla Guide to User Experience Research."
In the interim, please note that the book is written so that pieces of it can be read without needing to read the whole. It's designed to be used like a cookbook, rather than read like a novel.