Im sure you could get a good shot, but not a god shot. As you said, every time you change beans or anything, it needs to be re tweakered in again. If you were in a place where you were serving 30 or 40 a day it might be worth the investment, press the button and go do something else for the minute or two it's busy. Also on that lets be honest, how many of us genuinely,... go into a shop like that, expecting them to turn out something as good as we do, on a commercial basis?
Aaron