Reserved for some tint observations, perhaps some pics added later.
In summary: in a Convoy T2 light-OP-reflector flashlight at high, I get 290 lumen OTF (30% more than with the stock 4000K-tint XP-G2) , the hotspot is 4900K, 72CRI, slightly above the BBL so not the rosy appearance of the 4000K Luxeon V, but still a perfectly good tint without any green hue. The beam profile is very nice, no odd tints in the corona (unlike the new Cree leds) but just a fine beam as we are used already from the Luxeon V.
Edit: In the above chart the SST-20 is missing because I did not test a low CRI high output version. But here’s the chart of maukka’s test:
This SST-20 led tested has a bit less output than the Luxeon V2 of the above test, still when considering that maukka’s calibration is a bit lower than mine. The voltage at 5A is slightly (less than 0.1V) lower than the Luxeon V.