When I climbed with Brent N with the cables down in May, I noticed how UNslick the route was. Without the cables tied to the posts, one could move laterally a bit to try the areas outside the posts as well as inside. There really wasn't a noticeable difference. The granite was particularly clean, with excellent traction, due to the winter's snow and precipitation washing the rock completely clean.

On the other hand, I have climbed in summer, and the path between the cables is way more slippery. You can tell it is polished, but even worse, the dust from thousands of feet going up and down provides lubrication.

I can just imagine: Sunday's rain added to that dust must have made for a deadly slick situation.