It makes sense that the rear tyre will wear more than the front, but is it normal practice to swap the front and back?

I am getting to the point where I either need a new rear tyre or can swap the tyres around, however the rear tyre has a more robust design. I have IRC Mythos XC tyres and the rear has extra rubber at the point of contact (with the road/trail).

Anyway is front/rear tyre swapping normal or would you just get a new rear tyre?

Thanks, Portent.