As far as belt clips go with Jesse out of the game, that leaves TM and RS that I know makes them, but if they are willing to sell them separately is another matter. But TM does sell the occasional completed TD with clips and all. Which is a nice upgrade to any american unable to source the right diameter pipe.
Or you could make them yourself from 2" (or 1.8") aluminium strips. Jesse made an excellent tutorial on how he makes his. -> http://www.whitearmor.net/forum/index.php?showtopic=14283