I've only ever pushed C-41 film once. And I didn't develop it. It was expired Gold 100 which I accidentally shot at 400. Whoops. Sent it off and the negs came back useable (for scanning). I actually kind of liked them.

If you have a Jobo at home, why not push it? I do know that sometimes with color film, if you actually underexpose a full stop, you might want more than a +1 push (3:45).