I've been fine .. Grunden's made for Rivendale Rain cape . in some really heavy Winter Squalls on The NW Coast.
Hands stay dry too, never had that with all the gloves I've tried, they always are wet sooner or later.
bike : an IGH hub ( Linear grip shifting sequence)..and the lights mounted low so cape wont drape over them ..
the wind flows over a wing, thats how they fly ..