The HD2010 is a great thrower. I tested it last night at work. Beats anything I have, but my next best thrower is the UltraFire MCU-C88 modded by E1320 (Erik) with a Cutter U2 1C driven at 3.5A.
I will post beam shots soon, after Xmas. For now descriptions will have to suffice.
The HD2010 far outclasses the MCU-C88 for throw, and it spanks my TrustFire TF-R2, which has a T6 pill screwed in. However, the smaller lights are more compact. I'm currently modding a holster for the HD2010 to see how comfortable it is on a duty belt...
However, comparing these three lights, the beam on the HD2010 is more spotlight-like, whereas the C-88 and TF-R2 have brighter/larger coronas around their hot spots, which provides more of a spot/flood beam that comes in handy for lights used on night patrol.
BTW, my King Kong 26650 batteries fit in my C-88. I just can't screw the tailcap all the way down. There is a 2mm gap produced by screwing the cap on about 80%, which seems adequate. Also, the 26650 batteries charge fine with no mods/magnets in my TrustFire TR-003P4 charger that a received recently. I can charge two 26650 batteries simultaneously in this charger by just popping them in. The King Kong batteries seem very high quality. I'm thinking I'll order a few more... I also ordered a USB single 26650 charger, but I haven't used it yet because the TrustFire charger accepts the 26650 batteries.
Also, the HD2010 out throws my SkyRay SR3800 3xT6, but the flood on the SkyRay far outclasses any other light I own for sheer light output. This is why I'm looking forward to receiving my BeamTech BT-4000, which I think has started shipping.
http://www.tmart.com/BeamTech-BT4000-CREE-XMT6-18W-2700LM-5-Mode-Flashlight-Gray_p136640.html
This is the light that I have the highest expectations for ATM. But for now, the HD2010 is a very impressive spot/search light that I'm sure will be easy to carry on a duty belt. Last night I kept it in a cupholder, which makes it very accessible for spotlight use from the vehicle.
I'm sorry I don't do the multimeter testing to see what the light pulls. I still need to order one of those inexpensive multimeters so I can do this and report on this stuff. However, it seems to my eyeballs that this T6 is driven fairly hard, like maybe 3A or more, but this is a guess. I'm thinking the T6 is driven hard because the hotspot appears quite bright...
More updates to come on all this.