Much to my disappointment, this didn't live up to my expectations; but I don't think that this is the fault of the book itself - I had been hoping to read about the relationship forged in captivity, whereas this reads more like a travel log, with banter between the two friends.
I have dipped in and out, and parts have been really interesting, but at just over a month to finish it, it rather speaks for itself as to whether I fully engaged with the book.