I did not know about Moonward Coatings. I recently had a small mirror recoated by Normand Fullum. It seems like he did a good job and he has a good reputation from what I could gather.
I have a few mirrors to practice with. I wouldn't dare risk someone's fabricated mirror unless I was confident it would not be damaged.
I'm also planning on grinding some mirrors, eventually. I'm doing this little project with a friend from work and "coating" beat out "grinding" as the more interesting of the two.
I was thinking of a very basic vacuum system to start, using a few "junk" vacuum pumps from work. But then I spotted this full-fledged coating system in storage. It's probably close to 1000 lbs and will be a considerable effort to install in my basement (assuming I get the blessing to give it a new home). Not to mention the many hours needed to get it back into working condition. For the few mirrors I might produce myself, it's a little excessive. But if several other people are interested, it helps make the case for the effort.
This could be a lot of fun!