I just put one in an olight sr52ut with dd and three parallel cells. I’m loving the tint! Just hope it holds up to the 8.2-8.4amps it is pulling. 
it should be close to 2400 lumens as it is not dedomed. I’ll measure the lux as soon as I can get everything back to get her for the final go around.
About Mouser’s XP-L2’s, I have a few of the 4000K 80 CRI ones and apart from the better than worst CRI, the tint is exactly what you want from a 4000K led: slightly yellow slightly rosy, very nice and nothing like the ugly 70CRI 5-tints that I know from Cree.
Which excact ones did you get? It makes a difference which Macadams-Bin they are in (if at all…). The “best” Macadams Bin (2-step) actually is alctually most likely to have yellowish tint (for 4000K Cree LEDs).
How noticeable is the yellow corona?
They have just one in 4000K 80 CRI, it is Cree partnr. XPLBWT-00-0000-000HV340G
In my Maratac with small OP reflector the corona is really bearable, you notice it only if you look for it, I have not tried it in another light yet.
I have 1 or 2 of those same LED’s floating around. I agree, they have a very tolerable tint. I really like the lights that have them. Very bright as well.
I put one of the aforementioned XP-L2 U6 with 90CRI, 4000K, 2-Step into my Lupine Tesla and described that here (use google translate, it’s in German). The tint is yellowish, but outside it’s not bad. Because of the yellow tint and the slighty textured reflector of my light the yellow corona is not really noticeable as others have reported as well. The spot is warmer and much more yellow than the spill though. For me it was worth it because of the bigger die size compared to the Nichia 219C.
I published my test of
XPLBWT-00-0000-000BV540E - XP-L2 V5 40E (min. 70 CRI, 4000 K) and
XPLBWT-00-0000-000UU640H - XP-L2 U6 40H (min. 90 CRI, 4000 K)
There are weird differences in performance between both types. In general, in some cases the XP-L2 is not the best choice. The inconsistent color distribution in clear optics is also a problem.
Isn’t the 70 CRI, XPLBWT-00-0000-000BV540E a 5-step? I think the visual difference is to be expected.
Yeah, but 5-step doesn’t say anything about the efficiency (for this Cree uses the categorizing into specific groups named ‘binning’). This is explained in my test. 
5-step says that the variety of possible tints is very high and could result in ugly greenish or yellowish tints.
So far I know, Cree ships only one tint / color acc. to CIE1931 color space in one reel (250 to 1000 pcs).
Considering the current stock of XP-PL2 in the market, I think it makes more sense to just go for better CRI, instead of chasing the highest flux bins for a particular CCT. If your test is an indication, it appears that Cree is not consistent in their production and performance values of their XP-L2 binning. If a V5 is nothing more than an overrated V2 or V3, what’s the point really?
I would not generalize my results to all XP-L2 V5. Firstly it indicates that the LEDs of the reel available at Mouser (where I get the tested emitters from) are affected.
But there might be some difficulties at the production process we don’t know, I measured such weird performance deviations at a XHP70.2 too.