If I recall correctly the Easy White's are all multiple die (like the XM-L example you mention) because what they are doing is mixing and matching the die / phosphor arrays for narrow color temperature. Yes you can get that by binning but that's one of the benefits of the Easy White - no binning. The multiple die also makes driver electronics easier to design for luminaires.
Hi,
As far as I know EasyWhite is only for multi chip packages. This is not true that there is no binning with EasyWhite - there is only a diffrend notation of bins, which are in fact described only by CCT and the accuracy of binning (2 or 3-step).
Best regards,
Piotr Mroziński/ alled.pl