Ryno van der Nest, the renowned application specialist for Revit, AutoCAD and sketchup, presents a useful sketchup video tutorial that is based on Sketchup – Revit workflow. Sketchup Revit workflow can be useful for Schematic Design, Massing and Complex Geometry as well as quick rendering.
The files become superior if you export them from Sketch up to AutoCAD (dwg) and then put them into Revit as a in-place family (be that a mass or generic model). If you apply it in massing, the floors can't be assigned as well as volume data can't be produced out of the mass. If there basic geometry, it becomes easier to perform the study in Revit.