It's the only git operation I do with a gui. But as I said elsewhere, there are a lot of little integrations I do make use of. For instance I find it helpful to have git blame up on the side when editing a file.
I almost always operate in my own feature branch, squashing and then rebasing along the way... sometimes I'll just keep amending my feature commit as I work. I find it just saves me a lot of pain along the way.