Could hardly do anything but... Since you're here, I'm going to play fanboi for a moment and just say that I like what you've done with the Laundry series. I'm not a fan of splatter-shock terror, or of most horror generally ... but Lovecraft at his best was able to horrify at an intellectual level by making the ordinary world suddenly appear suspect. You've captured some of that, added the action/adventure aspect, and kept enough humor (or is that humours?) to balance the darker elements. Very effective, at least for this reader.
As I said above, I don't think anything in Equoids was unjustified in the context... but it is somewhat rough trade. Well written, but I wouldn't want it to be someone's introduction to the Laundry universe... and I think even you'd agree that what you're looking for is readers who care about the war's outcome enough to continue reading despite that rather than the kind of readers who would be attracted by it.