I have written many posts on the Samsung Gear S smart watch. Below are all the links to the review posts. With the Gear S review I also included my thoughts in a few joint posts with my daily usage with the Note 4.
Misc Posts on the Gear S –
Views from the Wider World – https://gavinsgadgets.wordpress.com/2014/11/17/samsung-gear-s-note-4-iphone-6-plus-views-from-the-wider-world/