Note that it's easy to pull money from IB, as outlined above, but not so easy to deposit to IB with these EMI accounts. Some of them offer a private IBAN indeed, but when you send money out, it gets sent from a shared account registered to the EMI itself ("the pool"). Your name/account number may be in the reference/comments field of the transfer but often that's not enough for IB (basically depends on the person processing, but most often denied).
TW certainly has this problem. I'm not sure about MT. Leopay doesn't have this problem, AFAIR.