I use a variety of operating systems. My workstation is a MacBook running OSX. I also have a Windows 7 PC that I use with remote desktop. Both of these are used for development work. I am used to TortoiseSVN for Windows and some finder plugin on the Mac. I am glad to hear there is a TortoiseGit, on the Mac I am good using command line if necessary. That takes care of working copies.
When it comes to backup or mirror, this will have to be done on a Linux based server. Pretty much use Debian for all server tasks. I have no problem scripting something if necessary to mirror the repository. But I would very much prefer a proven method, some recipe to follow that just works.
Essentially I'd like to keep the learning curve to a minimum. But at the same time I'd like the stuff I cook up be available and not hidden in a "virtual closet"....