This seems to be a very safe idea not to encourage CC or anyone else who has not had a course to open doors. The risk of opening the door from the outside is the chute being deployed and I doubt that CC would know how to check the 'girt' bar. Neither if you wearing a skirt is it the easiest task to do. Often doors have not been disarmed from the inside as CC have lots of things on their minds when the FC give the order.