To me it looks like it could be turned into a cool mailbox. Amazon reviews have a bunch of users who spewed enormous amounts of propane to heat it up and then were happy with their pizza.
For dinner tonight I lit two chimneys of charcoal and a few hunks of hardwood for two mediumish-sized pizzas with the PizzaKettle. And we were happy with our pizza.
But this PizzaGasser thing looks like it is designed for gas, and I can imagine some really gruesome things happening to it over charcoal.