Hey Karl,
My local hobby shop had them some time ago. I bought one and used it with limited success. The bottom of the bottle was not flat, so it wouldn't stay put; plus the thing leaked around the screw top.
Maybe I just got a bad one. Anyway, next time I'm in there (Abernathy's Northwest Hobbies - Bellevue, WA) I'll see if he still has them.
John