I have a client that has 2 ASA 5520's setup in Active/Standby, They currently have a requirement for a Secure Clientless portal but for only 20 to 30 users , but also require full VPN access for 300+ concurrent users to use the Anyconnect client. They currently have 50 user Anyconnect Premium licence loaded (25 on the active and 25 onthe Standby), however I see it as an uncessary expense to get additional Premium licences for them to use the Anyconnect client can I not rather purchase the Anyconnect Essentials licence and "unlock" the IPSEC client users (750) and use the Premium and Essential licences together?