You are trying these on in person, right? Fit on these things is crucial and very picky. For example, even though my kso's were carefully fitted and seemed right in the store, I've since found them to be too long.
KSO's are great for outdoors, but if you are like me, you may find that the ankle openings are too constrictive. I'm going with Treks when the weather warms up.
Lots of people wear them all over, but I'm of the opinion that they are too expensive for high wear use and go with regular running shoes for normal casual wear.