One of the things I like about git is that it is easy and fast to set up a local repository. You have a small script and decide it would be nice to try a couple of things. Then just run git init and you have your local version control in your script directory. If you later want to collaborate, it's easy to clone the repository wherever you want. If you add the script to your one big SVN repository, it's there forever.
in reply to Unrelated scripts and version control
I mean, for small things and finished projects, how often do you really need the version history? In git it's just this .git folder in your project directory. I didn't experience an administration overhead since my switch.