From my experience re-enacting - 1) swap shoes each time you where them - they'll even out. 2) These shoes were made for wear on much softer ground then MacAdam or asphalt - Remember those inventions did not exist for roads when these shoes were designed. They are extremely comfortable on grass, etc. Been there done that.

In heat on asphalt /gravel/Macadam they will be killers - be prepared for blisters.