I picked up the book yesterday and skimmed it a bit last night. It looks promising. Much of it takes place in my neck of the woods (The Bronx, Westchester County), so it's that much more interesting for me.
The big difference between this guy and Pistone, is that Falcone got close to the elderly Bronx capo MUCH quicker. He was "under," made contact, and got proposed for his button in like two years!! Granted, he was a veteran undercover agent, but he was only "Jack Falcone" for a short time prior to moving up the hierarchy.
One thing about these cop bios, is that their egos are as big, if not bigger, than the criminals they go after. From Pistone (the original egomaniac), to Rick Cowan (TAKEDOWN), to this latest guy (JACK FALCONE), they really lead themselves to believe that they did it all by themselves.