Its an interesting debate, but out of curiosity - how many people have ever had a coupler fail? (note - forgetting to latch it or put the pin in is not a failure)
If you had a 10,000lb winch - would you use chain on that too? Considering that every vehicle recover winch I've ever owned has had cable and crimps, I wouldn't be too concerned about it. Also the cable is generally stainless, so rust isn't really an issue.
That IS a failure, and exactly the type of scenarios that the safety 'devices' are meant to save. And it isn't always someone forgetting to do it, in some areas there have been rashes of kids going around to ramps and pulling the pin out of the hitch.
Umm, no - chain is the last thing that you use in any recovery operation because it breaks so much more easily and spectacularly than cable.For what we are talking about here, anything involving potential life or limb has a chain involved at some point!
Personally, I like chains. I hang them up with a tiny little bungee to keep them from dragging down the road. If the hitch fails, the chains will easily overpower the light bungee and do what they're supposed to do.