Father Kircher might find it cool. I like the idea of valuing this short experience of life. Of course a watch like this would maybe not be healthy for those 1) in jail 2) depressed 3) working very mundane jobs.
This brought to mind another concept I had that I call "Google Live". Whereby the powers of Google are at your behest verbally. Voice controlled computer search seems pretty powerful. But what if you could Google poeple's life expectancy?
Imagine waking up in the morning, your computer says "Good morning Dave." It is Day 14,630 of your life you have 12,798 days more to enjoy." and then you Google your boss's LE.