SS is correct. I'm hesitant to say much about Little Bugger because it is a prototype and I know the final design is different. As a concept, it works. I was asked if it is small enough to palm for discreet use, and it is. I believe the beta design is slightly larger but it should still be easy to conceal.
My concern about this design is the 14 mm stem. The load is a tall thin tube that requires stirring in order to vapourize evenly. The flow is somewhat restricted and harder draws concentrate the flow in the center, resulting in a dark spot. The vapour path is short, so the vapour can be hot and harsh. The stock stem will be glass, so there's fragility issues although 14 mm stems at this size are pretty sturdy. None of these is a deal-breaker. For a lot of people, the trade-offs will be more than worth it.
My concern about this design is the 14 mm stem. The load is a tall thin tube that requires stirring in order to vapourize evenly. The flow is somewhat restricted and harder draws concentrate the flow in the center, resulting in a dark spot. The vapour path is short, so the vapour can be hot and harsh. The stock stem will be glass, so there's fragility issues although 14 mm stems at this size are pretty sturdy. None of these is a deal-breaker. For a lot of people, the trade-offs will be more than worth it.