I have had my first pair for about a month and bought my second pair in a different color about 2 weeks later.  They are comfortable, have the perfect arch support for me and are very packable to keep in a back pack. Im not a runner so I cant speak to that, but I do use them on the treadmill at my local gym and they do just fine.
I also find useful as slippers at night. These shoes are designed so that you can collapse the heel to use these as slip-ons and will return to original shape if you want to wear them like a full slipper.  They are comfortable with or without socks.