Split-GPG and kgpg, seahorse, kleopatra, gpa

Does anyone know if it is possible to use kgpg or similar programs such as seahorse, kleopatra or gpa. I haven’t seen so much as a reference to any of these in any Qubes documentation or forums. Would there be any benefit in doing so? Currently I copy text messages, ctrl+c, in my messaging app vm. Then Ctrl+v, and paste into the kgpg system tray icon.

It seems I should atleast setup and use subkeys. I currently have only 1 4096B gpg keypair.

https://alexcabal.com/creating-the-perfect-gpg-keypair

see this discussion: