I've been getting used to S-log over the past few weeks, and the best thing that I have found about the setting is that it has a beautiful curve on the highlights of the sky.
In this quick test video that I did as preparation for my 90 second upcoming film Everstone, I found it much harder to retain the highlights of the the sky on Cine compared with LOG. While looking a lot more colourful, I did notice some splashes of noise in certain shots with the LOG shots, so I should be careful where an when I use it.