I'm about 5/6th through, and should be done tomorrow. Overall I've really liked it, good book, kinda a stealth 'Starfleet Corps of Engineers' book.
Some minor gripes:
The editing wasn't as good as it could be. Not MAJOR flubs, but enough errors to be noticeable.
That'd be bad luck with the timing, and it going through the editorial system at the peak of the changes of editorship... It had something like three editors in the space of a few weeks.
I also thought that Scotty's illness seemed rather unrealistic. All these things going wrong, all at the same time... it really struck me as a plot contrivance. It might have worked better if you had established he had health problems earlier in the book, maybe. Had a yeoman reminding him to take medicine?
Or some such.
I considered that, but...
I'm liking the scores on the doors so far...