Many thanks for all your responses. Now I want one for myself, darn it.
A question: the primary consumable (and ongoing cost) is the charcoal. Not a lot, by all accounts, but it's a consideration.
What does the "official" charcoal look like, in terms of size? And is this charcoal from "hard" hardwoods like hickory and oak or is there room for "soft" hardwoods?
The reason I ask is that I can (and do) make my own charcoal from readily available "soft" hardwoods like poplar/cottonwood and willow, as well as Manitoba maple. These are available in infinite quantities, and we have been using them for generations to smoke venison sausage, fish, jerky, you name it. Nice flavours. But will they work, screened to size, in an Egg?