I don't really need this book for my current job, but will probably buy it simply as a way to pay Patrick for all the valuable and free content he's provided over the past 5+ years.
I'm pretty confident that I'll get significant value out of this book for my current job, but I also agree with this sentiment. For all of the value that I have received from Patrick's posts, comments, podcasts, etc. over the years this is the least I can do. Buying it now.