This is very informative, thanks. While I haven't investigated the additional benefits of running gpg-agent as a service as you've shown here, I did want to me

This is very informative, thanks. While I haven't investigated the additional benefits of running gpg-agent as a service as you've shown here, I did want to mention Keychain [0] which has been great for managing ssh-agent and gpg-agent for console use. [0] https://www.funtoo.org/Keychain https://www.funtoo.org/Keychain