A couple of years ago before 3M offered the Command Light Clips, I purchased just the regular clips and mounted them around the front door to hand Christmas lights.  Well, two holidays later, and they are still hanging on!  This is surviving the harsh Western New York winter weather!  Plus they make hanging Christmas lights a snap!  I leave them up all year round, and they are barely noticeable.  I also received a free sample from 3M of the Light Clips, and they work as great as the original.