We can do it now. All that is needed is one of the following to happen:
a) An individual with the talent and time to measure and hand-input the plastic case measurements (and all the nooks and crannies), verify that it can be printed by at least two services, then sell the finish product from the service's online store. (Unlikely)
Yeah I did all that, but when I sent it off to the printers they misinterpreted my measurements and it came back 47mm wide by 24mm deep and 7.6 mm high. Cute but useless....