MultiSite, Domain Mapping & SSL

I am using Multisite ( with my blog set to subdomain ( I want to buy wildcard SSL in order to secure my main site and also all my client site. I am using dedicated IP. The thing is I might want to offer premium upgrade to my client which they can use their own domain such as ( and also offer it with SSL. I cannot offer them premium upgrade with their own domain but without SSL as my normal package does include SSL (wildcard SSL). It will be somewhat a downgrade in term of security. The Multisite is hosted at my own server thus I have the access to WHM/Cpanel. One more thing is by offering them SSL (premium upgrade), i do need to give them their own dedicated IP. That's the only way to get it working with SSL. But as far as my understanding, Multisite cannot work with dedicated IP for the client. Please help.