Hello Carl,
Yes, the annyconect client can be download it from the Webvpn portal, Now you have the option to determine that it needs to be saved on the remote user computer. so next time he connects it will not be need it to get into the portal and just connect using the Remote AnyConnect client.
Regards,
Do rate all the helpful posts and let me know if you have any other question.
Julio
Julio Carvajal
Senior Network Security and Core Specialist
CCIE #42930, 2xCCNP, JNCIP-SEC