Gents, as a qualified Diving Instructor I concur - there is no discussion around the fact that a diver has no need to know the month and date of the month, underwater. Neither, the fact that it's a leap year.
Does a diver need a gold case? No, from the development of Staybrite steel more than 50 years ago, divers are more than happy to have stainless steel on the wrist.
But, the market apparently demands such watches - and IWC has sold the red Gold Vintage Series AT's as well as other precious metal AT - and no doubt there are significant number of people who will buy this watch and YES MAYBE some of them will be affluent divers.
The ONE MAIN SAFETY FEATURE THAT ALL DIVERS WANT IS A BACKUP DIVE TIMER - and I am willing to bet that this AT's bezel lock mechanism is superb, and better than most on the market. I will reserve final judgement on that. for when I dive with one of the new AT's with this new bezel lock mechanism, and report back on that here.