When we used to do Cat III B no DH approaches on L1011 in the early 80s, we only had approval at UK airports. Everywhere else we had a mini DH of around 25ft. When we practiced flying a GA from DH 25ft in the sim, we would touch the runway momentarily before climbing away.
So if you do one for real in an Airbus and don't manage to get F3 before touch down - then don't be surprised when you get the Config Warning.