They look cool, but I know someone who has a set on his MTD Kingston. He says exactly what DR posted :
"The new, durable K3™ coating consistently lasts a minimum of 180 minutes, and will only wear away."
180 minutes? That means that after a mere 3 hours (and they tested with a pick), your strings will lose the coating. I can bet that a finger player who sweats a lot will get wear a lot sooner.