What I like about MD11 & MD12 is they act as additional layer to avoid me scratching the camera base
And most of all I can turn on the meter without pulling film winding lever which always pokes to my eyebrow. But just today my motordrive failed to function. I was hiking in the snowy area and it soon refused to crank the camera. I pulled the battery tray and put in my pocket. After I finished hiking I reinsert the tray and it's working again. Apparently it can't stand cold weather.