Out of here: I have just looked at my old manuals and for the -300 Vmcg was 126.5kts (-600 Vmcg was 136.5kts ) My incident was on a -300 TOGA departure.
With a min V1 driven by Vmcg it is hard to see a situation where TOGA is being used therefore the handling issue should be less critical in practice since less than TOGA thrust is usually being used. That is the very reason why Airbus certify Derated Take-off Performance to allow slippery runway ops with low V1s.
I do not think that Airbus are talking about engine failure when they talk about being "go minded" above 100kts.