As you can see, the tang of the Astro was too long to fit the standard-size slotted block I got from Treeman, so it had to remain showing beyond the handle. I have debated drilling the protruding tang to fit a thong, but do not want to do anything that might be considered a change by Gary and the Shop.
(In the picture I cleverly(?) laid the thong over the exposed tang, and probably shouldn't have.)