Today my coworker introduced me to his Galaxy Gear S watch. That thing is pretty impressive! Has GPS and a SIM card. I know I'm supposed to pledge allegiance to the Apple flag and all, but wow.
Its also more than 100% bigger in volume than the smallest Apple watch, but hey whatever, if you don't mind the I'm a geek look. Do it.
Also, there is few apps, interface is clunky, craddle flimsy (and Samsung is a bitch about replacing when it breaks seemingly). Reviews have been mixed. 3/5 to 4/5, average about 3.5.
Tizen seems to be a very efficient embedded OS, so that's a positive if they can actually get it developed more.