Exactly. That approach is the biggest benefit imo. With working copies synced via dropbox you can just switch Machines and continue were you left off without ha

Exactly. That approach is the biggest benefit imo. With working copies synced via dropbox you can just switch Machines and continue were you left off without having to push incomplete/not working code. You also get a cloud backup of all your local changes for free. Just dont work on a working copy that is out of Sync, but since you are only using this yourself, chances of corrupting something are much lower as with the approach described above. For people with multiple machines this is awesomeness. Everybody else still benefits from the extra backup layer of dropbox.