Plus, when most people are using an editor that doesn't have a per-project settings for the language/format to use, it's really hard. Getting everyone else on a VS solution to change their JS editor to 2 spaces, and disable the auto-format is an exercise in frustration.

That said, the convention for most languages seems to be towards spaces at this point, and I don't care enough to argue anymore as my choice of editor(s) allows me to set it per project at least.