Jonathan Nieder:

What would I be missing?

If you can manage to do that and never mis-push, then, yes, that would be 
fine. As soon as you have local branches checked out it starts getting 
problematic; we also have different servers with different branch namespaces 
that we push to, and making sure the wrong branch doesn't get pushed to the 
wrong server can sometimes be difficult.

-- 
\\// Peter - http://www.softwolves.pp.se/