Hi Pete,
You should also talk about the use cases that show the capability of vCNS in securing the Cloud environment. Run different use cases to show them how you can segregate the traffic between two different organization. You should also talk about the different settings like NAT, Firewall and load balancing work. This is there in vCNS documentation and you can also take the use cases by showing how companies like bluelock are running vCD at the back end for their public cloud services.