Olympus OM-D E-M5 usage in very low temperatures

I am planning a trip over the arctic circle and the temperatures can reach -15c (5f) or below that and I am wondering if the camera can be used at this low temperatures?
Would using a Lumix 20 mm on an OM-D body cause any damage to either the body or the lens under such temperature? I know that it is weather sealed with the kit lenses so it is probably okay with it.

thanks in advance.