Just been reading the Photo.net forum and a guy on there says the following about the adapter:-
"I use the adaptor regularly. The adaptor forces me to "see" panoramic subjects, that without it I would have passed. In practice the thinks that bother me are: 1. Somehow stiffer wind (even worst than 220, especially near the end of film) 2. Weird position of camera on a table or bag with the rewind knob at the bottom 3. Difficult extraction of the adaptors take up spool."
*Think that answers my question!*