When writing without a few letters of the alphabet, creative linguistic acrobatics become necessary. This book started out with so much unnecessarily odd phrasing, that the change was hardly noticeable.
But when you remove enough letter, it degrades into virtual nonsense. I think that may be why the author started in the style he did; to show the degradation, and none of the elaboration.
The degradation was about the only thing I found interesting in this book. I would have liked it better if it had ended with the "No mo Nollop poo poo" bit. I found their normal writing style annoying.
Overall, I think this book lacked all subtlety, as well as an interesting story. Perec is so much better.