And I won't be able to comment on the Schwinn either (at least for a while) since we've put the idea off. We went and rode a Trek T900 at the store in Elk Grove village, and a few yards down the parking lot, my fiancee (as stoker) got totally disoriented and uneasy. She didn't enjoy the captain position either, since it felt very different than the single she rides (a lot). So that's that for some time!
Thanks for all the input in this thread.