It's a cool idea, yes. It is useful yes. But I think Rich hit it dead on-
Not really necessary with a lot of the new inks
Now with a handful of the inks we use now it would be super nice. I think they would probably be more than worth it right now, but may not be as cool 5 years down the line.
I've wanted to try something like this(sort of) actually more like the misters you see at the grocery store. Run the lines down the press arm and just get a wide angle spray nozzle.
One last thing I picked up on from the mister, on a oval like that, and it being overseas along with the lion's share of their market being overseas, I have to guess that is probably targeted at shops running 15k pcs jobs on average. Makes so much more sense then....