Review by the rambling and informal numbers:
Taste: 8ish
Apparent build quality: 8, I hope the ignition switch holds up, it seems quite solid.
Speed: 9. Scary fast, only outdone by the MFLB.
Value for money at the 140$ price presuming that the company continues to be as awesome as they've given every indication of being: 8ish
Ability to produce heat and overcome the cooling caused by the user's inahlation: 8.5
Ability to retain that heat even when the flame is cut and the user inhales: 8
Vapor production as a whole: 8.5, limited by bowl size
Compatible and effective with waterpipes: very effective, 9mm and 14mm GonG with an O-ring.
Ease for novice users unacquainted with vaporizers in general: 5ish
Ideal for: someone who camps or travels and is away from outlets but still wants a powerful portable which can do herbals or concentrates and works quite well with any glass they may have with them.
Adding the Hammer to a waterpipe really brought out its strengths to me. When gassed up and juicing the flame, but not so much that it blows itself out, I've found that the Hammer can easily overcome human inhalation and continue to produce vapor and indeed increase in temperature if you are not being mindful. You can even vape using retained heat very effectively, building up enough heat in the element and then cutting the flame before you inhale. I'm able to produce large clouds with ease through my bubblers using the Hammer.
My main gripe about the unit is that I can sometimes vaguely smell butane when it's in use. I am using Power brand. Sometimes you can hear the flame quavering when in use, and not because it's turned up so high that it's nearly blowing itself out. Anyone with a collection of torches know how idiosyncratic and potentially troublesome they can be and I wonder if maybe some incomplete combustion is leading to the butane aroma. Anyway, It's my main complaint besides small ergonomic gripes (grandmas with arthritis need not apply), small bowl capacity/heat exchanger size, and a fuel tank that could probably be larger. The Wispr/Iolite smell while in use too and it's something I definitely didn't miss, although the Hammer completely slaughters them as a power vaporizer for a power user.
In the great portable war, ever vaporizer has a niche, and I definitely see one for the Hammer if the company stands behind it and continues to develop on its great potential.