I'm thinking of someday doing this but having a whole fermentation room rather than a cabinet. I realized if I had a couple of conicals, I could alternate between 50*F and 64*F in the room every couple of weeks; primary your ale and D-rest your lager, then condition your ale and ferment your lager. A 20 cu ft fridge at 34*F would be used for lagering in kegs, and another 20 cu ft fridge with a collar used for storing 8-12 serving kegs serving 8 taps. Four conicals would crank out up to 30 gallons every two weeks, leaving 4 weeks for lagering before going to the serving fridge. Beer for the whole neighborhood!