by Mark Biasotti, DS SolidWorks Corp
Have you seen the Xbox style controlled used in SolidWorks marketing material? It was designed by Mark Biasotti, and he has made the file available for download. There is no written tutorial to go with it, but just reviewing the files and how they were created should be beneficial. The model shows both master modeling techniques, and was created with surface modeling tools.
Download the model (SolidWorks server):Xbox Controller