This book is definitely a mixed bag.
I normally can zip through a book if I enjoy it, but this one stayed in my drawer for a while, as I skimmed through magazines, picture books, anything else. The beginning just really didn't grab me at all. And throughout the book it remained that way...portions of it just seemed written by a bad fan-fic writer, while other portions nearly sparkled with ingeniousness.
The writer really shone when he wrote about the Unseelie fey. His descriptions of their lair, their behaviors, their queen..were all quite remarkable and creative. The passage in which two lowly unseelie hide in the forest to steal wings from natural creatures to hack off and attach to their backs for the journey to another country was especially inspired. And for those who are "urban fantasy enthusiasts", the reference to the main character studying art in "Newford with Jilly Coppercorn" may elicit a chuckle.
But the book is definitely uneven. Certain passages are never mentioned again, characters have mystery for reasons not fully explained. You get the feeling that the author is trying to set himself up for sequels set in the same world, but with the unevenness of the writing, you can't even bring yourself to care. And if I don't hear another reference to farting or penises again in my life I'll be quite content (well, at least the farting). It seemed at times like the author wanted to be Charles de Lint, and at other times he was channeling Laurel K. Hamilton (ENOUGH with the sex already!)
So...I recommend this book as an enjoyable way to pass some time, but hardly found it to be a masterpiece.