I've already worn out one pair of shoes and it took a lot of running in the Swedish forests to do that. I don't think the soles have any shock absorber so the forest is the right place with soft trails and moss. It's ok to walk with them on harder ground but no more than that. The good thing with stiffer soles is that sharp stones don't cause any problems.
The tips are covered with a rubber layer which make them lasting against tearing from stones and branches on the ground. A neat thing about these shoes is the Salomon shoelaces system. Just pull and hide the laces in the little pocket. The laces last pretty long but where just about to break when I bought my new shoes. The inside of the heal was also worn out but that could be because of me being careless tying my laces before non-jogging activities.
The best thing with these shoes is how they suit my feet. I get a great support for my arch and it feels like I've been running several miles the first time I use them. Try them in a store before ordering.