I use _ instead of - for the vertical split. But other than that, I can really recommend these splits. I also agree with OP on keeping with Vim defaults. Simpl

I use _ instead of - for the vertical split. But other than that, I can really recommend these splits. I also agree with OP on keeping with Vim defaults. Simply because you are more likely to find yourself behind a non-configured Vim than a non-configured tmux.