Yeah, it's a pity. Untiil my Ray D1 showed up (which also no longer seems to be made), I used to take my Jet-II IBS with me when I wanted a pocket thrower.
BTW, the Jet-II Pro replaced the original Jet-II IBS, and added a few niceties like a tailcap lock-out and bi-directional clip - but lost the head-removal/focus feature. :shrug:
I'm sure it would be hard to find any version now, as its been 2 years since these lights were produced.