Ok - took some pics, made some measurements. I'd say I'm usually disappointed with a first look at output, yea like 99% of the time. The best #'s I'll measure with a maukka calibration factor is almost always lower then the spec, with some rare exceptions.
This EC06 though is utterly insane! I'm actually afraid to test it at 30 seconds because at 10 seconds, it's close to flesh damaging level, yet it's a fairly robust host, coning in at almost 100 g more than a Q8 at 501.5g for the EC06, Q8 at 409 g, and the bigger Convoy 3X21A at 577 g.
First set of cells I tried were a brand new set of Vapcell T42's, supposed slightly better performance than 40T's and measured 28090 at turn on! Ouch! Yes, flesh scorching hot in just a few seconds.
Measured again without re-charging over 10 secs: 27755 at turn on, 25360 at 5 secs, 24660 at 10 secs. Lumens are with the maukka calib factor. My old calib factor got 12% higher lumens, so these #'s are on the conservative side, but make note this is not at 30 seconds.
Throw with a 2 sec pause, taken at 5 m: 127 kcd
So what makes this light so hot? Well, it comes stock with 22 or 20 AWG spring bypasses on the only 3 springs in the light at the batt- end of the 21700's, and direct brass ring contact on the batt+ side. Also there's a unique power design to the driver, 3 separate output channels, 3 pairs of LED wires -- that has to help. I'm still not sure I can explain this because the best turn on lumens I've seen from a single XHP50.2 3V light is 4500, though probably could have gotten more. If I could get 5000 with a top cell, then x6 for the EC06 puts it at 30K, but the EC06 has 2 LED's per cell, therefore it should not do as good a a single LED driven by a single 21700.
I looked closely at the battery tube end, and the tweaks they've got factory stock is many of the things I've done in mods to similar lights. Haven't looked in detail at the driver and head assembly yet, but I expect more of the same. I'm almost thinking these guys studied my mod posts, but of course I'm not the only one doing them, and mostly they are common sense anyway.
I'm not sure what A2 stock settings the firmware has, but the surface temp really got hot quick, and I haven't even gone into Advanced UI mode yet. Sure hope top of ramp and/or 2C is set for max turbo in the Simple UI...