Client in heavy industry is supposedly using it to repair and manufacture critical parts for ... critical things. If the marketing is to be believed.

Good question!  I still have a job so I suspect it's not quite there yet, and I really haven't kept up to date on what's been happening with printing metals.  I wouldn't be surprised to see some really cool things happening, the world never sleeps!

I watch a channel on YouTube where a guy repairs stuff by spraying metal particles through a torch to repair damaged parts, that has to be very similar to printing!