Or if you have asked about the weather and want to go back to the watchface. I tried to turn my hand so it goes dark and then back again but Siri is still here.
It takes like 20 sec to revert to the clock face when down so unless you wanted to keep using the watch, it wouldn't be a problem. If you still wanted to use the watch, then you'd need your other hand at some point. If you were gonna rely on Siri for the next task, you could just use "Hey Siri" and summon the task, no?
I know it's not terribly important, I'm just trying to understand
P.S. By the way, you can return to the watch face from any app by covering the screen with your hand. It will default to the workout or maps app if you're actively using those.
I had my iPad plugged in at work the other day and the guy in the next cubicle was talking on the phone to a client. At some point he said "hey, seriously..." and lo and behold, Siri woke up and starting typing out his conversation.
I do wonder how many fake calls to Siri will happen with the apple watches as we move about the world and run into other people..."Excuse me, can I squeeze by"? "Hey seriously, what are you carrying a 50 gallon tub of popcorn for?"....
It's only activated when the face is on, so it's probably not gonna be that much of an issue. The bigger issue is when your phone/iPad is charging like you mentioned. I ended up disabling it on my iPad so at most I only have to hear one device go off.