An excellent addition to this series. The Demon Accords is one the most fun universes I've ever been in. (and I've been in many others since my "Golden age of Science Fiction".)
Snakes Eyes feels a little rushed in spots but overall it's in the top 3 of the series for me. Probably Fallen Stars is my favorite but I'll have to re-read them to make sure, drat! :D
If you haven't read the whole series, at least read the previous volume, "Rogues" as it sets up Snake Eyes. Each volume ends in a good spot but Rogues was a bit abrupt-- not throw the book against the wall abrupt but definitely "wait!, there's more to this story!" abrupt.