Received my 2 @ all copper heads and 2 @ tailcaps today. They're very attractive - Particularly the heads which effectively dissipate the heat.
Shortly I'll receive a Vestureofblood P60 drop-in XHP-50 FET DD with Guppy Driver that will be driven by a pair of high-discharge 18650's. The high current setup will benefit both from the head's heat dissipation strength and the tailcap and Mclickie's low-resistance ability to handle 5+ Amps. The other set currently services a more pedestrian single cell XML-2 3.0 Amp single cell setup.
I've enjoyed playing with your toys for more than a decade now.