I usually fold it. I find it gives a little more coverage with a little more pleasing texture/mouthfeel than if the meat was just stacked flat.
But I also used to work in a grocery store deli making sandwiches, so I think that might have played a part in developing a preference.
But I also used to work in a grocery store deli making sandwiches, so I think that might have played a part in developing a preference.