I'd seen this on Amazon, but it was actually reading the first few pages in a bookstore that made me buy it, plus the blurb from Kim Harrison.
Overall, it reads very well. Lots of action, but generally well formed without the feel its their for its own sake. i.e. all the action is 'justified'. The characters are compelling, and become moreso with the passage of the book, and there are quite a number of plot twists. The feel is reasonably dark, with a lot of moral ambiguity - not so much on the part of the characters themselves, but certainly in the world they exist in and the power structures they support. And the authour is certainly willing to let the characters get hurt a bit.
There's a potential relationship forming with the main character, but wouldn't be surprised at all if it didn't turn out.
And its a bit longer (smaller writing) than a lot of the urban fantasy out there (Kim Harrison and Mike Carey besides!), so that is nice too. Thouroughly recommend. Has a similar feel to both those authours, and to a degree with Lilith Saintcrow.