Thanks, that has been really helpful!
Looks to me as if the NUDE styli are available in three variations: NUDE Conical, NUDE Elliptical, and NUDE Mono. I am guessing the NUDE mono is for playing 78s and the other rwo have round and elliptical cross sections. If so, they are quite different from the SAS shape, and are not what I ordered.
Emails will be going to Japan!