I haven't read it but I was thinking about getting it soon. There are a couple of other vegan runners I've found online that have a lot to say about the matter. Something I think I need to remember though is that I'm not the same as these world class runners. I'm a 60-year-old who's not nearly as serious about the running as they are and less inclined to eat some of the stuff that they tout... I like to keep the food kind of tasty and the running kind of casual if you know what I mean. So I've got to figure out what works best for me.

There's still some valuable and relevant information in there (re: getting the full distribution of nutrients and enough energy for your workload), even if you're working at a sub-elite level.  Hope it guides you to feeling stronger/faster/better.