Almost done with Ancillary Justice by Ann Leckie (90.9% by my calculation, as the Overdrive reader says I'm at location 1711 of 1881).
It's been a good read, and I'll probably continue on to the sequel very soon (as soon as I can get it from the library - I have a suspended hold on it).
The gender/sex thing was confusing though. At first I was thinking the main characters were all female; then on the provincial planets where the language makes distinctions based on gender some of them were referred to as "he" (like Seivarden) despite the narrator calling everybody "she".
I still haven't really made sense of it, and still keep picturing pretty much everybody as female; but since the physical sex of the characters doesn't even really matter to the story (even when some of them engage in sex play with each other), at some point I kind of decided that I just don't care.
Which might have been Leckie's intent all along. Whatever.