You do land kicks with the toes or rather the tip of the shoe in savate, yeah.
But savate kicking techniques are all based around wearing shoes. One advantage of delivering kicks with the tip of shoe is you can deliver the kicks with more extension than if you are kicking with the ball of the foot, and a good solid kick to a soft target, hitting with the hard tip of the shoe does definitely hurt.
My question would be this, though:
If your interest is self-defense just how often are you going to i) need/want to deliver a toe kick, and ii) be in bare feet at the time? And given that those sorts of circumstances are going to be vanishingly rare, is it worth conditioning your feet, versus just learning to kick wearing footwear?