I went for a short ride and just got back about an hour ago. I had a full face mask ready to go and a light but warm coat on. I ended up not putting the mask on as it wasn't THAT cold.
My knees got sore pretty early in the ride so I upped the assist. Just enough power assist to help me along without pushing too hard so the pain in my knees went away.
I got a little excercise, fresh air, and a reminder of how cold it's going to get soon here northeast Ohio.
Without my e-bike, I wouldn't have bothered. And that's the point - the biggest reason I have one.