I think the Olympus winder, which fits either, is not really comfortable, certainly compared to the winders for the Pentax MX and ME-Super. Those winders have the shutter release at the top front of the grip, slightly angled, which makes vertical shooting much easier. Also the Pentax winders have a threaded recess for the winder socket on the camera, which the Olympus Winder 2 lacks. A little thing, but the OM-2n I bought came with a winder, but minus the cap for the body. How could most owners keep up with a little disk, about the size of a battery chamber cover?
BTW, the RMA and prepaid shipping label for the OM-2n finally arrived. Off it goes!