There's a zip attached to post #2 that contains my examples.
Basically, I have an existing FP template that is built on 11x8.5 pages, like a calendar. The desired output is 11x17 sheets, saddle stitched, like a calendar would be.
Unfortunately, I can't figure out how to setup an FP imposition that works with 11x8.5 pages. Setting up a saddle stitch imposition using 8.5x11 pages is trivial, but the converse escapes me.