Zen Kobudo: Mysteries of Okinawan Weaponry and Te

Has anyone read 'Zen Kobudo: Mysteries of Okinawan Weaponry and Te' by Mark Bishop?

He mentions this book in the reviewed Okinawan Karate: Teachers, Styles and Secret Techniques.

I wondered if it was interesting. I enjoy(ed) Okinawan Karate. And in that book he also writes about kobudo and te.
Does Zen Kobudo add or is it more a repetition?

you can buy a used copy on amazon for $3.12 ...not a huge investment to find out, eh?
http://www.amazon.com/Zen-Kobudo-Mysteries-Okinawan-Weaponry/dp/0804820279

Ed,

IMO, its a bit of a disapointement after his earlier work. It is what he says it is.

How accurate are his observations is always the issue.