I did read the use cases and the main pitch. I guess these don't highlight very well how it actually functions. Can I do "git add large.mp4 && git commit" the way I do now?
The documentation lays out the workflow: https://help.github.com/articles/configuring-large-file-stor...
As does the website: https://git-lfs.github.com/ (see: "Getting Started")
git annex add large_file
git commit