Mine just arrived. It's not small, like I thought it might be! It's also is perfectly clear, not like the one shown in the picture. If you happen to have a 4.75" downstem (4.5" sort of works with extra water, but not ideal), a 19mm stopper/plug (could be improvised), and a 19mm whip connector and whip, this thing is pretty fun. It's also a great conversation starter. I’m no sure how much I’ll use it. The pull to vapor ratio seems off. Still, it’s fun looking.
I call it the Jabba Bong (after Jabba the Hut).
I use a very short downstem connected to the whip (as per Lee's video) to attach the whip to the bong. This (theoretically) gives additional diffusion.
I'm a little worried about plopping it down on surfaces, so I'm going to cut a piece of thick wood (construction debris) and route out an indentation for the pipe to sit on.