Travel for sure. A lot people think you can pivot after a hop step but you can't pivot into or out of a hop step. All you can do after a hop step is pass, shoot, or travel. That being said, you'll go insane if you are nit picky with the rules. The current refs are as inconsistent and bias as they get.
are you sure on this rule... if ur dribbling and land on both after doing a hop step, then why cant u pick a foot to be the pivot foot .?