I started this book this afternoon and it appears to be very similar to On The Run by Alice Goffman. I have mixed emotions when I read this type of book due to the difficulties that the ethnographer has in separating their work from their feelings. There seems to me that there might be a book about the relationships (personal I mean) between the ethnographer and his or her subjects. Maybe I am reading too much into it, but it seems like a fair assumption.
I have included this video from the author about the book for your viewing. I hope you find it informative.