Yes, you are doomed to destroying your device, sooner or later. I do not carry anything in my trouser pockets for that reason. And I do not carry anything in my shirt pocket for the easy-to-lose reason. So, I use a messenger bag since before-I-received-my-first-cellular-phone. And I have got to replace my current bag, soon, due to everyday wear, with something even more durable.
Yes, this watch-phone device is elegant. Yes, I would prefer to put on a space-suit first, and this watch (or anything electronic) second. No, I am not going to do it, for two reasons: first, I cherish my electronic devices and wish to protect them as extension of myself; second, a human should adapt to the changes wrought by him onto outside world, instead of avoiding them.
Best wishes.