We found the same system works for us. Rain pants are too hot and humid. We have lightweight raincoats with good ventilation. They are Gortex, but if it's raining and we are pumping, the vapor sadly does not get out. I too have a visor on my helmet which helps some with my glasses, but if it is raining too hard, or really misty, I have to remove my glasses. I would worry about a poncho in high winds. Seems like it would act like a sail; not a good thing in a headwind or crosswind.