This, with the caveat that manually specified returned address, is not officially supported yet (I think, I lost the link to the gitlab issue @GiMa). In this case, it would either be z2mp at the user’s risk or only t2mp.
Edit: On behalf of @Gima because of his new user limits
z2 MP is possible with custom refund address (keep in mind the 80 bytes limit). TC has added this for EVM’s only, we can add it for all chains. PR issue