Shep and Ian Murray sat in a pair of white Adirondack chairs on the front stone patio of Vineyard Vines in Edgartown. Both were barefoot. A pair of Crocs, blue for Shep, gray for Ian, sat next to the chairs. They wore khaki shorts and blue-accented shirts, a polo for Shep, untucked button-down for Ian. They looked like any other pair of brothers on the Island in August.