Never done that, so you can disregard what follows if you choose.
I was considering going that route on the rears on mine. The added cost along with the need to carry 2 spares, along with the hit in fuel mileage, changed my mind.
I still think it would look cool though.
Unless you go off road often and in areas with soft terrain the extra wear and tear on front end parts, as well as tire wear, your fuel mileage will also tank, pun intended.
They would look cool though!