[rubyist5eva]

Why?

Subversion is way easier to use than git, and it takes minutes to setup a server. Pushing your project history is just a few steps with git-svn, though it may take a while depending on the size of your project.

TortoiseSVN is probably the most straightforward and easy to use version control GUI there is.

[pfundstein]

My point is that it's easier to manage and maintain a single version control system.

> Subversion is way easier to use than git

That's subjective, I'm more familiar with git thus it's easier for me.

> and it takes minutes to setup a server.

Git doesn't even require a server to use. You can create local repos, you can pull/push to remote repos via SSH/HTTPS/etc. No specialized server software needed.

> TortoiseSVN

TortoiseGIT. (Though I prefer headless)