Hi Jace, first I need to know if they will be reader spreads (pages 1 & 2 together, usually for screen viewing) or imposed (4 & 1, if page four is the last page, usually for final printing) booklet spreads. You cannot export to either in Scribus, but you could manually layout the pages depending on which you require. Please let me know which and what OS and Scribus version you are using.
Cheers!
mnawij