Frankly, this is a feature I have wanted for years, and that I would expect a professional layout application to have. Something on the order of "duplex printing respects layout". It would be very useful when printing just a portion of a document that happens to start with an even-numbered page.
I do catalogs in sections, and each section begins with a left-hand page. When duplex-printing a given section, I have to print that first page separately, and then duplex the rest. Kind of a pain, and it shouldn't be necessary.