If we are to believe in the faithfulness of the anti-reflection coatings' graph, I cannot agree with the suitability of VIS-NIR or UV-VIS. They would work, I know, but they would induce some other sort of Duv and CRI distortions. Too many up and downs in the VIS-NIR or UV-VIS curves between 400 and 700nm, this is the reason. VIS-EXT and VIS-0, on the other hand, look more faithful, staying at ≈0.5% and below between 400 and 700nm.
Faithfulness matters. 
Edmunds coated? Does Edmunds posseses the patents of the above shown coatings? Patents expire, doesn't it?
Now, onto the “there are many manufacturers that can provide quality multi-layer coatings, also in China” thing, I agree.
I was also thinking in multi-layer coatings before I stumbled onto the Edmunds article. So, I've taken some additional time to check the following:
Anti-reflective coating: Guide to Solve Glare Problem on your Product @ WeeTect
I am no expert in this stuff, but if the above graph is indicative of the effectiveness of a multilayer λ/4 MgF2 coating, it certainly looks good. With three layers at 450, 550 and 650nm the result should be great. Four layers looks very neat. With five λ/4 MgF2 layers at the proper stepping the result would be gorgeous.
Also googled BBAR anti-reflective coating. In Anti-Reflective Coatings – VAR, BBAR, AR Anti-reflective coatings of vacuum optics @ Torr Scientific Ltd. there is a noteworthy coating, the FS-BBAR-397-727. 