The question came up about being able to use config files for WCF to control which protocol is used, as opposed to doing it pragmatically as show in the demos, etc....

The free Virtual Lab shows how that is done. See it at http://msdn.microsoft.com/virtuallabs/netframe/ 

Attendee Andy Wilbourn looked at the lab "The Fundamentals of Programming the Windows Communication Foundation Virtual Lab", pg 8. Thanks Andy!