On here I'm guessing just me or maybe one or two others with Kvants or who are building projectors using Kvant modules. Worldwide, who knows. How many Kvants out there?
One thing you could do is talk to Kvant. I don't know who there supplier is, but I'm guessing there's a trade deal to be done at the right price. They're very high quality projectors but I don't think they've gone to town with the dichros. I don't have anything to take measurements from but there is a highly visible beam of red / blue passing through the mirror and a similar highly visible beam of green passing through the pass red blue reflect green dichro. I feel pretty sure based on the brightness that whatever they're using atm doesn't come close to those figures.