I have been meaning to read this book for years. I love Dante's Inferno, and I love reading alternate versions of classics. I also really like reading Niven & Pournelle's work, so I thought this would be a great book.
As it is, the book was merely "meh" for me. The main character had some interesting adventures in the book, and met interesting people, to be sure. There was a lot of commentary/in jokes with regards to other sci-fi authors, and the book does seem a bit dated. It was worth reading, but I am thankful that it is relatively short. The book was just not quite what I was expecting.