My biggest fear and also my biggest excitement is the 4 chambers. The promise of it is awesome. Load the vape, slip it in your pocket, rip and rotate as needed. However when someone designs something around a specific concept, they sometimes make sacrifices to what makes a good vape good in order to fulfill their concept. 4 chambers is great. But the vapor quality also needs to be there, As well haze must combat the uneven nature of convection, stirring surely ruins much of the convince of 4 loaded bowls on demand.
I hope haze took priority in both these aspects of design. because if they have succeeded, they will reap the benefits big time.
I wonder, What type of on demand are we talking. Instant? 5 seconds? more? less?
Let us see, best of Luck to you haze!