I've been waiting too. On custom B/S/T Leef stated in one of his threads that there were new ones on the way to LightHound soon, but I never saw an ETA.
Leef has spent a lot of time developing the BigLeef system. In a post in the custom BST section he said he had another run of the 18650 bodies being made.
Waiting also. I already destroyed a HA 6P body by boring with a 3/4 inch which is 19mm. I bought a drill bit 3/4 size and drilled through it. It worked but the threads broke from it. That is the problem. My suggestion. Don't do it.
Maybe a lathe would work, but I would not risk it anymore. I think the metal under the threads is just too thin for boring at least for the 6P body. Sooner or later it will break. What also I think needs to be taken in consideration is that protected 18650 are thicker than unprotected 18650.
John/Lighthound recently indicated to me via email that it will be a couple of weeks before he has more for sale. I'm already using 2x18650 C-C (w/ KL-5) and 2x18650 M-C (w/ M3/MN11) bodies, but still have a Millenium Turbo head that needs a host body. Guess I'll need another couple of protected 18650's too.