Next item on my reading list

I was shocked recently to be told of the existence of a pastiche of which I had never heard. Namely...

My first port of call was Amazon for reviews and boy does this book polarise opinion. I already know enough about the plot to know that I won't be a fan of the story but I am keeping as open a mind as possible until I have finished it.

Have you read it? If so, please leave comments (preferably without spoilers).