I'm currently working as an ASM on a devised piece of theatre as part of a rolling premiere across the country, and due to multiple changes being made on multiple occasions, we used single-sided script pages. More and more changes were made, even after our first few stumble-throughs, so we only printed double-sided scripts once it was confirmed that we had the final version of our script. I definitely felt guilty about the amount of paper we went through, but a new script was necessary, seeing as the scripts the other ASMs and I had were both out-of-date and covered in out-of-date line notes.