Hello Charles, Espionage is not meant to encrypt a home folder because the OS will try to access those folders earlier then Espionage can load itself and unlock the folders. It is meant to protect folders inside your home (sub)folders, for example inside your documents folder, picture folder etc. as the OS will not go deeper it will just check if the default home folders are present.
The idea is that a portion of your user data is sensitive and you keep it in a dedicated folder and then use Espionage to protect it.
I hope this helps, let me know if you have any further questions,
Cheers
Zsolt