Yeah, but my way could be done with $15 worth of relays, no hard-to-find VW switch, and you get the satisfaction of a quiet evening spent soldering at the workbench, solving another of life's most vexing problems with your own wits.
I think anyone who fabricates his own brackets would prefer this solution.
Hell, you could probably put the relays inside a CAD-designed aluminum enclosure that resembled the diaxial Hotchkiss valve on the original Spyder.