I use a 3/4 HFC with a pull down for cold and inclemant weather while travelaing and a Harley Hybid 1/2 when is hot warmer out. Some times I wear one and throw the other in the tour pack so if I leave early and it cold I can change as it gets warmer. Nice having a bagge you can carry stuff.
I don't have much of a face, but I still use it for work, so I try to limit my risks. I ride with a full face Shoei RF1000. I must have tried on 30 different helmets, and this one fit me the very best. I stay cool in the summer and warm & dry in the rain, without my face getting stung by the raindrops. I can set the visor open a fraction of an inch if it starts to fog, and that takes care of it.