Not uncomfortable most days, but still cool. Bring a long sleeve layer if you get cold easily.
Don't think it's cold, but it is very comfortable.
I'm a pretty athletic guy and I am always pretty comfortable in C2. The temp is well regulated in my opinion. If you are the type to always need a jacket, then simply bring one or a light sweater. Chances are you won't need it inside but it's better to be prepared than to have a bad experience due to your lack of planning. You can always leave it in your car in case you need it.
Not really. The cordite plus air filter keep the temp pretty stable. It might actually be a little on the warmer side. Then again I'm a big guy so I have extra insulation.
Thanks! Your answer is awaiting moderation.