burkesilver - i put zipsoles on mine and highly recommend it. i am in ny a lot and i walk a lot and tend to be a fast, hard walker so i def. put wear on my shoes. if you don't - they maybe it is not necessary, but for ~$30 i think you are better off. the soles are so delicate.
also the zipsoles prevent you from slipping around - which happens with flats.
also the zipsoles prevent you from slipping around - which happens with flats.