Never read it, is it any good ?
Passable. You have to keep in mind that some of the political aspects of the background to Greg Mandel's exploits were written in the days when it looked like the Bliarism will rule forever.
All in all it is not as good as the hell going quantum in Night's Dawn or the Primes, Humans and Post-Humans in the Commonwealth Saga + Void Trilogy. It is a good read though (keep in mind - the book mentioned is No 3).