Re: "no self respecting spook would be caught using Microsoft Windows to do their spying"
"the very probable fact that, spook or no, management will be using Windows and management wants their time sheets, planning, expense reports etc done on time. I haven't heard of a lot of Linux versions of the products that handle that, so you'll be most likely using Windows for all that stuff."
Management should be using what the organisation's security bods specify which, you'd hope, would be something more like Open BSD. LibreOffice will run quite nicely on BSDs so I can't see any problems with the sorts of management stuff you mention.