The writing style is accessible, with easy-to-follow 'recipes' with a specific goal at the end, and there's a lot of inspiration in the book. However, if you're totally new to Inkscape, this book is not for you (you might want to try Packt's other Inkscape book, Inkscape 0.48 Essentials for Web Designers
if this is the case). The author jumps over the very basics (there are plenty of online tutorials for the basics) of Inkscape in favour of more advanced recipes.
The book features some very cool artwork created solely in Inkscape, and covers a lot of material, and as a prolific Inkscape user of several years I found hints and tips I hadn't come across before. The only chapter I found disappointing was chapter 9, 'Web Graphics Presentation' - it was too brief to be of any use to beginners, and too basic to be of use to more advanced readers.