I understand that you are concerned about Session Sharing.
Please note that Session sharing fails in the following scenario.
1. By default Load Balancing takes precedence over Session Sharing on a fully loaded server. New connections are routed to other less busy servers, rather than have their sessions shared with existing connections
2. It's applicable only for seamless application
3. Session sharing won't work if the published application properties or preference settings like colors, security, audio, etc. doesn't match.
4. Session sharing is a feature of the Program Neighborhood Client
5. Session Sharing does not Occur if you click on multiple applications at the same time
http://support.citrix.com/article/CTX159159
