There are going to be *at least* three desirable encodings of a person's identity -- the 'natural' encoding in the preferred/native charset of the person's name, some kind of phonetic-ASCII encoding that tells non-natives how to pronounce the name, and the email/idna encoding[s] that folks would use to exchange mail.
Folks: it has *not* been decided that there will be a different encoding for email. One such encoding has been proposed; other proposals have been made. This is being actively discussed, and there should be no assumption that the discussion will end with a new encoding.
--Paul Hoffman, Director --Internet Mail Consortium
