I was excited for a moment. Then found out neovim doesn't support -x. And this is why: https://github.com/neovim/neovim/issues/694 (tldr; vim encryption is unsecure and thus removed from neovim for the time being). Would have been nice, though.

Didn't know VIM supported encryption, this is really cool. http://vim.wikia.com/wiki/Encryption