It's too ambitious. It relies on too many implausible concepts. It ... oh, what the heck, it was a great read.
Only at the end do we realize just how huge a canvas Lake has been painting all along. It's not only a steampunk adventure, but also a great heap of metaphors and examinations of what humanity and society are all about.
Occasionally I was annoyed that the characters' feeble ploys to fool others were always successful, and that (as in any adventure story) the main characters are bulletproof.
I'll forgive that because of Lake's refusal to let "the gleam" become too much of a factor. I won't say more than that for the sake of those who haven't resd this yet.