I love the Tool, I have one as my back-up light (with LuxeonQ).
I would love one in copper as well, and I'm all for this very design.
It has an issue: for mere civilians this is of none importance, but for a BLF-edition IMO crucial: in this type of switch the internal spring is part of the current-path: apply more than 3A current and the spring collapses: switch=dead. This has prevented me from hotrodding my Tool, which is ok, but this copper version screams for 10440 and direct driving a Nichia 219C (4+amps).
And here's the problem with chinese budget lights: they still use the same parts that have been around for a decade, a high current switch that fits the Tool probably can not be sourced, and there's no developement of very simple and cheap but newly designed parts (switches, springs, drivers) that follow the high current requirement of modern leds.