Migrating from Subversion to GIT

I'm in the process of migrating my personal software development version control system from Subversion to GIT.  I'm still new to GIT, but I'm impressed with how fast it operates and how well it handles branching and merging.  I wanted a way to retain my Subversion commit messages along with my code.  I found at article by Jon Maddox here that has the steps to do this.  

However the command he listed didn't work for me, not sure if this is because I'm using Mac OS X or not.  Instead of "git-svn" I had to use "git svn", no hypen.  My current Subversion respository also requires authentication, so I added the argument "--username" to the command, which then prompted me for my password, and downloaded my repository.

You can find more information on GIT, including a free version of Pro Git, head over to http://progit.org/book/

Now I just have to decide which GIT GUI client I want to use, Tower or Gitbox.