Am doing wall siding with lap siding above and panel siding below. Panels will have either exposed reveals or exposed trim between. Would there be a way to model the seams / reveals?
Custom Profiles. Use one at a time, or multiple reveals in one profile if they are regularly spaced throughout the project. If you use beams they are automatically cut from the wall surface (and then you can turn their layer off if you want, the cut remains)
Use columns and beams and put them on a hidden layer. The reveals are cut automatically (no SEOs required). Just make sure the intersection priorities are set correctly (elements and layers).