Hello @PopeyetheSailor,
You still need local protection from files that do not come over the Internet and protection when you are not connected to the protected home network. Also, Armour comes with Total Security in the package (even the trial) and this is a superior product to Internet Security (this one can cover Windows devices only).
So, if you subscribe to Netgear Armour this will do the complete job and Internet Security will no longer be required.
Best regards.