I have to admit, I will be curious to see if Martin sticks around solo. Most of the reactions to his stuff on here has been about like the ones here, and none of his solo stuff has a higher rating than 3 stars out of 5 on Amazon.
I can say that it does sell.
Myself, I thought that the novel was decent. Problems with characterization and writing style, but interesting plot ideas and structures.
I'd give it a 7 out of 10.