Once I got the pendant finished I had decide how to finish the braid. I have been hesitant to do the standard binding-and-gluing-into-endcaps because I'm used to making things that can be undone if they don't quite work out, and the gluing seems so final. Plus I kind of like the little fringy tassels at the ends.
I was going to just tie the ends together temporarily and come up with something better later on when I remembered a Chinese cord necklace I have that has a sliding knot sort of thing instead of a metal clasp. A bit of YouTube searching later and I had my solution.