I got on a Watch forum and asked the assembled cognoscenti "What is the toughest most damage proof watch you can buy?" and the consensus was a steel Seiko Diver.
And they were right. It's been through a lot, enough to damage and scar up any other watch I've ever had. The downside of it is that it is somewhat bulky and heavy; for example, if I am doing something like digging post-holes, where my wrist is going fast and stops on impact, I don't wear that watch. But nothing else bothers it; seawater, dirt, rocks, whatever. Still looks good after many years.
I probably could have mitigated the "weight" factor by buying the "Titanium" model like yours, though. If this one ever gets lost or fails, I'll probably go that way ....