I went out for a rather long ride on my motorcycle the other day. I'm finding that right around 45 degrees is "do able", less than that and it's gonna be a very short ride!
Long johns, turtle neck shirt, sweater, heavy jacket over all, gloves of course. Yup, could hardly move, difficult to turn my head to check for vehicles beside me before changing lanes. My bike has a full fareing, big windshield and the back rest (I just put on) helps a ton with cold air on my back. I'm thinking it's more cold than the Cobra would be, by far. So, OK, I might dress lighter and go for a spin with the Cobra at around 45 or so.
Maybe even colder than 45 with an electric vest and removable butt warmer? Both of which might be the ticket for the bike as well.
I'm still figuring out this whole cold weather thing after having been in Hawaii for the last 20 plus years.