I just looked at the kitchen aid website the grain mill looks like it has bread makers in mind, not brewers. There is no hopper. So you’d have to process grain scoop by scoop. Definitely not suited to all-grain brewing.
That said, I bet it would be nice to have to crush specialty grain when brewing off-kit extract recipes. You could buy specialty grains by the pound uncrushed, and save a buck or two over kits.
