As most of you know that many of these functions that we attend are at night. When we wear our helmets and with low light levels, we are blind.
I have been thinking of using a very light tinted visor, mounting it permantly to helmet, then layering a second visor(same tint as the permanant visor) on the inside of the helmet. This second tinted visor would darken the visor and would be removeable.
So during daytime functions, i would have a double visor, then at night i would remove the inner visor, resulting in better vision.