Well my grinder arrived yesterday, less than 24 hours after ordering it which is great service from Coff-hey. Really pleased with it so far, although I've only been playing around with some cheap beans and a French press until I've got the hang of it (and until I get an espresso machine).
One little niggle is the grind adjustment dial on top:
This would be obvious to someone who knows about this sort of thing, but as a noob I looked at the dial and assumed that the numbers 0 - 5.5 represented the full range of the machine, that one full turn from 0 to 5.5 would take it from finest to coarsest setting. That isn't the case, it requires several full rotations to go from fine to coarse.
Now that's obviously a good thing, it gives a much greater degree of control, but in that case why bother with the arbitrary numbers? The numbers are entirely meaningless, they tell you literally nothing about how the grind is set because you don't know how many full rotations have been made. Why not just have the notches and the arrow?
Anyway that's just a minor niggle at what seems to me an odd design choice, otherwise I love it. It chews through 35g of beans in about 15 seconds which is amazing because I've been using a hand grinder up till now!