I just tried out my new rain cape from CAT (Center for ApporiateTransportation) in Oregon. I ordered one in all yellow with a detachable hood; they are made as you order them on site. Rode 50 minutes in constant Seattle rain. It works amazingly well. Great design, workmanship and materials. Super service too. Thanks Jan and Zack for putting up with me.
Wore the hood under my helmet, no problems head checking. Other than my face, not a drop of rain above my knees. Bike stayed dry above the crank and I was not drenched in sweat despite wearing a long sleeve fleece jacket and leg warmers.
It was not too windy so did not have much issue with that, but given that this cape stops around mid thigh it should not catch too much wind.
Ahh, I actually look forward to the next ride in the rain...