This is my personal review obviously, I'm not saying these shoes are terrible..they were comfortable, fit my foot well, and are durable.  My issue, and it's a huge one for me, is that the zags/zigs are rock vacuums.  If you went on trails and roads where there are no rocks, I don't see there being a problem, but just walking around my neighbor hood for a few minutes and coming inside I'd have to check the bottom of my shoes and pick the small rocks out of the crevices.  Not sure why this has been such a huge issue, personally feels like a giant design flaw, but maybe it's just my luck to live in a neighborhood with millions of pebbles that fit perfecly into the designed cracks on my shoes...I still wear these when I work out indoors though!