I am thinking to try a full face helmet on my E-bike for cold weather commuting. The main reasons would be the ones people consider for using the skiing helmet (a summer optimized helmet is too cold with too many holes, all my clothes match the season so why the helmet should be the same). Unlike skiing helmet that has been design for the different use case, some full face downhill helmet should, I assume, automatically feature the same and actually better protection that for a very frequent rider will do no harm.
Is there some analysis or argumentation ever published on using MTB downhill helmets on E-bikes for commuting, that would be worth to consider?
P.S. Here is some discussion why full face helmets are not in common use between the cyclists. I am more asking if there is some advocacy for trying.
P.S. This question is about the "slow variety" of European E-bike that provides assist up till 25 km/h. Such speed is not unusual for an ordinary bicycle going downhill.