If you use Orion on iOS and macOS your bookmarks are able to be cross synced and updated automatically. However, regardless of which profile you use or which one is set as default the only one that syncs bookmarks to iOS is the "Personal" stock profile that is there when you create a fresh install of Orion.
Long term it would be nice to be able to select profiles on iOS but short term it would be nice to be able to select which profiles bookmarks sync to iOS