I wore a DW6900-1V for 2 solid years in the army(forced conscription in my country) and for approximately another 3 years after that before resin rot destroyed it and I traded it in with Casio for something else.
It has never left my wrist at all while I was serving. I did everything with it on. Went with me to Thailand a few times as well. I remember I used to lie down at night in a Rover playing with the EL and dreaming of home, trying to sleep.
Only exception was when I was in my own home then I'll remove it. If not, I eat, sleep, .... and shower with it. I believe if I had not taken showers with my watch on, it will still be alive today. That's why I never take showers with any watch on today.
I have no wrists shots though. I served before there was any digital camera in the market.
Come to think about it, I kind of miss it...... Maybe it is time to buy another DW6900???????