Yep, he could be a Mennonite (of which the Amish are an offshoot) or a member of the part of Church of the Brethren (my own roots) which still dresses simply & similarly to the Amish and are called the "Old Order Brethren" by the more progressive branch of the church. My mom had cousins in the Old Order who dressed liked this but had all the modern conveniences. The Mennonites and Brethren are all a peaceful bunch and not in your face at all. I brought up the Amish because of the documentary I'd seen and the similarity of dress.