A Standard / Forward Segue can be clicked on in the Storyboard builder and the style can be changed to Custom. At this point a Segue Class can be specified. However, this is not possible for an Unwind Segue. Unwind Segues only have Identifier and Action to specify. It reasons that their type is "Unwind Segue" but is there a way to create a custom Segue class for these Unwind Segues?