Getting an inside peak into the mind and growth of a Gadol is indeed fascinating. I didn’t read this book, and I doubt I would. But, All for the Boss had that element. It is a book that shows you how a determined person was unfazed by his surroundings, and how he grew and grew.
I also enjoyed immensely the Chida’s Masa’os, Magal Tov. It gives a real insight into his personal opinions and thoughts. Although I doubt he would be so happy about people reading it.