Note that org mode is not just an outliner. Org mode is also a spreadsheet, a time tracker, a taggable and searchable database of arbitrary information, a literate programming system that can run code in dozens of languages and exchange data between them, and a document authoring system that supports a number of different backends such as HTML, LaTeX, and ODF.
There are Vim extensions for parts of this, but org mode is more than the sum of its parts. It is a universal information management system, developed with the express goal of being transparent and extensible. It really is a marvellous piece of software.
Put simply: No, and there probably never will be. I was in the same situation, and eventually I just switched to Emacs. The switch is pretty easy with evil-mode, and spacemacs might make it even easier.
I'd just bite the bullet and install emacs. You don't need to move all your text editing work there immediately, doing [Alt]-x org-mode in a new buffer and playing around with features such as headlines (type * ) or todo's (type TODO in a headline) should be enough to get started. You can always refine your workflow in Org further, so there really isn't a minimum amount of things you need to know or learn.