Each Chaos product imports Cosmos assets as best suits their users. In the case of 3ds Max, an imported Cosmos asset is a V-Ray Proxy object that uses native V-Ray materials.
In SketchUp and Rhino, the Cosmos asset begins as a “black box” reference that can be merged to become a V-Ray Proxy for editing.
In Revit, Cosmos assets import as lightweight native Revit families and can also be used to replace other objects. In Cinema 4D, a Cosmos asset imports as an "Object" with all materials applied. To import the full geometry in the scene, the Cosmos object needs to be made "editable".
In Chaos Vantage, the Cosmos asset will be a reference that is always extracted from the local Cosmos repository.