I would just leave it as flexible - perhaps put DH may like to cut the cord if possible - if not perhaps mum would like to cut the cord He may change his mind when he is there; men go through an amazing transition after the birth of their baby, I love watching it. But he may also feel uneasy, so perhaps leave it an open thing for now. You can always change it later if he changes his mind, even when the midwives are on duty you can tell them then! All depends on the Ob.