We have both Old Order Amish and Mennonite families in my area. People usually just call them all "Amish" but that wouldn't really be correct. The backpack adds a little modern touch and I saw a lot of them today.
I grew up close to the "Pennsylvania Dutch" area in PA. They had both too and I learned to call them by the correct name. There was a store on the edge of the area that was run by Mennonites and I was always surprised at the little modern touches.