In my own startup we're using git to handle our version control as well. As mentioned in the article, git is flexible enough to allow you to create your own workflow, which is what we did when we started.

However, our workflow became much too convoluted and we switched to gitflow by Vincent Driessen (nvie.com). In fact, there are similarities between gitflow and the braintree workflow but gitflow now has as a git "flow" module to help you out.

If you haven't checked out gitflow, I highly recommend it. Here's the original post that started it all: http://nvie.com/git-model

Has anyone else found git workflows that work well for them?