I have the Ticwatch 2. It works. They produce firmware updates every month. They have a beta path. There is a Chinese version of the firmware and an international version.
It still a work in progress but so far I'm happy with the watch.
The new versions are Android Wear 2.0 based, the older ones are a custom Android Wear 1.0 modified.
Probably the S and E are already packaged ready to ship.
They use Kickstarter for the visibility.