IIRC one of the McGizmo clips has a tripod hole in the clip, which is pretty clever.
To be honest, I got all excited when I first saw a tripod mount on the C10R, but when I started thinking about it it turned out rather pointless. I have quite a bit of studio equipment (or: grip gear), and there's at least 10 better ways of mounting a led light to a tripod or lightstand. In practice I don't think I'd ever put a led light on the 1/4 thread, but more likely lower on a lightstand as a constant light (that'll easily be overpowered by the flash, so won't affect the exposure).
The simplest way to mount a flashlight to a lightstand or tripod is to carry ball-bungee's, that just snap everything to everything else.