I agree. I am a vim fanboy, but I don't see myself using this. Presentation is about how best you can convey an idea, and I don't see this being flexible enough to help me do that.

The only upside I can see, is that if you are updating very often a presentation while collaborating with someone else, it is easy to keep it under git.

There are other tools that let you write slides in MarkDown, which is then compiled to HTML to be rendered in a browser: https://github.com/search?q=markdown+slides&type=Repositorie...

or you could collaborate your presentation using 3d. that also would be easy to track under github.

I love vim too. Vim isn't the right tool for presentations. Then again, I find that PowerPoint or LibreOffice are just as bad.

I write all my presentations in LaTeX and use Beamer. Haven't found a better tool for the job (for my purposes).

In case you didn't know, Org-mode in Emacs has support for export to Beamer. It frees you up from needing to use LaTeX at all: http://orgmode.org/worg/exporters/beamer/tutorial.html

Probably not reason enough to learn Org-mode, but good to know if you know the Org-mode basics. (Basics of Org-mode are simple but it can get pretty complicated b/c so many features.)