I don't think it's any more confusing than the current system of the wife taking the husband's name. In both cases the name is changed, but in the current case the wife's identity is symbolically subsumed into the husband's; she stops becoming Miss Smith and becomes Mrs Jones. Technically, in formal address she even takes his first name, becoming Mrs David Jones. That seems pretty wrong to me. By comparison, Mr and Mrs Smith-Jones retain their original identities (as Mr Jones and Miss Smith) and their names are equal.