Vimwiki has some basic keyboard shortcuts for editing and navigating between pages in your wiki. It also has a couple of neat features, like the ability to export your entire wiki as HTML documents using a single command. But you could accomplish all of this with some basic configuration changes so I wouldn't call any of those "advantages". To be honest, I don't remember why I started using vimwiki as it was years ago but for whatever reason it has stuck with me.