Sorry for stirring up trouble. I do already own the book, so I thought you wouldn't mind. I actually have been reading the physical copy a lot since I sent that previous email (and just reading it on the website on my boox lumi when using that instead).
Book is really impressive, it covers so much, I initially didn't realize it roughly teaches how Shen is implemented throughout its pages.
Having the book online really helps people discover it, learn what makes it unique. Out of all of my friends etc who i've talked to about Shen, most of them that have heard of it still remember it being closed source. Few know that much about it, having more information available to people will really help with that.