I use pass with multiple vaults. Not the same 2 vaults as you want, but I run one "everything" vault, and another one for just "mobile". The "mobile-passwords"

I use pass with multiple vaults. Not the same 2 vaults as you want, but I run one "everything" vault, and another one for just "mobile". The "mobile-passwords" git repo doesn't have any password I don't use on my phone.