I'm not really interested in shooters... I play Touhou mostly for the music and story, so I can make fanart and comics from it.
But I bought some of ZUN's music albums, and I will buy at least SA and maybe some of the other games.
I can't really read much Japanese, so a blog like that is impenetrable for me. And I don't know what White Canvas is either...
The book is kind of expensive, around 2600 yen, but you certainly get your money's worth. It's printed on matte paper, even the color pages, but the print is good, and the colors look nice.
Listening to the CD now, but it's pretty hard to determine the sound quality with these cheapo headphones connected to the built-in-screen speakers... Sounds alright, I guess.
The comics in English are translated in the margin, as we saw in the preview. It means the page coverage is smaller, but it should be easier than having to flip back and forth to the text section.