Not quite true, I know the developers and they're working on Lion support, as well as some major updates to the vm.
HN user
AllTom
Some of the applications on my computer that are bigger than Gitbox: Google Chrome, Wireshark, Inkscape, iPhoto, Komodo Edit, etc. My hard drive barely noticed when I downloaded Gitbox, so practically the only difference was a few extra seconds of download time that I didn't notice, that's all I was trying to say. Your comment was helpful to the developer in the end, so kudos.
Developers, too. Until you study and play with git for a long time, local/remote branches and pushing/pulling are hard to understand and very hard visualize. With Gitbox it's like reading your e-mail. I promote it at work as "the git client with five buttons" because that simplicity is worth a lot.
I don't know why it takes that much space, but that doesn't seem like enough space to worry about on a Mac.