>>1286180>>1286305It's not really about keeping yourself dry, but keeping yourself semi-dry and keeping your drivetrain, bottom bracket, rim brakes, and headset clean.
It's fantastic for a commuter but i put SKS Longboards on all of my pavement bikes. Even a mup path will cover your chain in grit, and city commuting is much more disgusting. You have a bike that stays clean and needs way less maintenance