SMT can be transferred (what happens if the recipient doesn't have a wallet for that SMT? Is this done automatically by the blockchain? Not clear in the white paper yet)
Maybe I'm misunderstanding either your comment or how the SMTs work, but I don't think there's a separate wallet for each SMT, I think everything uses the same Steem wallet. So you can only transfer an SMT to someone who has a Steem wallet account in which case they can have any SMTs.
RE: How To Deploy Your Own Smart Media Token On The Steem Blockchain - The SMT White Paper Series, Ep. One