Note the number of pages it reports. When printing finishes, if mpage reported an odd number of pages, remove the last one from the stack, since there will be no even-numbered sheet to match it. Then arrange the stack of paper for printing on the other side. For other printers, you figure it out. I don't have such an expensive printer, so I can't check it yet.
Paper seems better organizable and more secure to some people.
They could update the draft and send it back to you. I have not had much luck. You can use the paper that has been in a laser printer in an inkjet printer by using the other side. You should purchase smaller computers and monitors when possible. This will save packaging material translating into less solid waste.