I'm the fella who went with Apple as a tool for crippling arthritis - and still believe it is the best device for people with useless hands, and a need to access phone, text, email, and such when they can no longer handle a cell phone. (and it's so much cooler than that "I've fallen and can't get up" old lady.)
I have a second Apple Watch arriving Monday (Couldn't get used to a right wrist watch in any format.) Since iOS 2.2 now allows for multiple watches paired to one phone? It's now a single button switch over to swap from one to the other (instead of 30 minutes of re-programming). I just found this brilliant idea on a watch forum. If I keep the "under" watch in power reserve mode? I can use my watch for pretty much every energy draining feature I now have turned off - phone calls, animated screens, etc...and when the battery hits say 20%? Just switch to the second one and carry on. (and since I make watch straps myself? I can cobble this together in no time...pun intended.) This changes everything.
I'll assemble it in alligator and post photos once it's done. Freaking brilliant!
(pictures 'borrowed' from member umarrajs)