So I just finished it, and immediately started hunting around for any sequels Simon Toyne may have come up with, and was immensely disappointed to discover that it's just come out this year, and there aren't any sequels yet. But it is obviously set up as a series. So there's that to look forward to.
Toyne is going to be one of my Must Read writers.
The Solomon Creed series: watch for it, read it! It's compelling!