So I have the Galaxy 6 Classic and the Pixel 2. This is the case I have for the Pixel 2, it helps with the petite look. I do like the style of the Pixel watch and I bet the next year will have a couple of size options. This is not the most stylish case, but it is surprisingly comfortable. I have found a couple of more stylish case/band combos but the bands were straight up leather, which are nice on occasion but the leather gets a bit nasty with sweating.
There is also the Spigen version, but to my tastes it has too much branding on it.
A couple more I am looking at, just not sure they will fit the newest watch, it says no. Although many say that and are compatible.
Amazon Amazon 2