I've heard a lot of great things about not just this book but the whole trilogy. Now that I've read the first book I have to say: Holy Crap, that was awesome! I'm looking forward to reading the next two books (and looking forward to Abercrombie's next book set in the same world coming out later this year).
One of the things I've been paying close attention to as an aspiring author is the narrative voice of the POV characters. I've stated repeatedly that, in my opinion, no one crafts a better narrative voice right now than George R.R. Martin. He has umpteen POV characters in his series A Song of Ice and Fire and yet every one of them is unique, not just in character but in the narrative voice of the writing.
I have to add Joe Abercrombie to this short list as well. The narrative voices of the POV characters in this first book really stood out. It's one of the real strengths of the story for me.
Between Martin's Tyrion Lannister and Abercrombie's Sand dan Glokta we have two of the most interesting and unique characters in Fantasy.
Another excellent use of narrative voice is Asher in Karen Miller's The Innocent Mage and The Awakened Mage duology that make up Kingmaker, Kingbreaker.