I keep a cheap one in my pannier just in case, but if rain is in the forecast, I take a jacket. The cape doesn't do too well in the wind, so you'd have to slow way down from your usual pace. It keeps the upper legs dry, but not the lower legs and feet. It's good for cool rainy weather, but if it's above 65F, I'd rather get wet than hassle with the cape. I also wouldn't ride it in the dark because it covers my headlights.