On a long tour, camping, full rain gear is a safety requirement. Every now and then we are caught in a long downpour which we simply cannot get away from. On a recent tour, across Michigan UP, we had steady rain for 60 miles with no place for cover, no services. Yes sweaty at end, but warm, without full gear we would have been hypothermic. The extra weight of lightweight rain pant is nothing in the face of exposure outdoors.