Good tidy way to keep things organized, protected, and handy. I do like to see my pipes, for quick selection and decoration, but I am careful to keep them away from direct sunlight, and open racks can get dusty, even when the pipes are kept clean. So it's what makes you happiest. Out-of-sight, I'm afraid some pipes wouldn't get smoked for months. The main thing is to keep pipes in a moderate to cool temperature, not too humid and not too dry, and out of direct light.