Well I put my Icon through a real world test over the last couple of days and I will say that it not only passed with flying colors but my son won't give it back to me.
I went shore fishing (at night) with my son and brought my icon 1AA along to see how it would work out. After using it for awhile I handed it to my son and told him to put the lanyard around his neck - after showing him how well thought out the lanyard system was, and to just drop it in his top pocket till he needed it. He runs with a small headlight but often said it wasn't bright enough for some tasks, but doesn't want to carry a big light in his pocket, as he likes to keep things at a minimum (surf shorts, tee shirt, and slippers - what do you expect for Hawaii).
My son walked a little ways down the pier and I could see the Icon light up to spot fish near the bank, light up to change and redo tackle, spot stuff around him, signal me to get my attention. All tasks were under 5 minutes but I did notice the light being used more and more as the night went on.
I have tried to give my some a number of lights to try out and they have always been returned with "It's nice but....." The Icon was the first light that he said, "This is what I need, it's perfect, can I keep it?" Success, I was able to find a light for a very picky non-flashaholic.
Now I'm off to order a replacement for me.