Didn't they do it at that org loosely connected with the Nation's Health? Also at that other place loosely connected with the nation's defence? No details though, but I know a man who might have some, in the case of the latter.
Yes, it's in use on the NHS project. Has its own schema in the DB where all their stuff resides so that it's protected from upgrades and patches etc.
I can't provide any more info for now as i am on a short xmas break (well 2 weeks to be precise) - if you can keep your bits crossed until the new year i may be able to provide further help.