If I travel with my old '71 datejust I can wind the date backwards or forwards so a GMT models is not the only Rolex model that can do this safely and without breaking.
Are the new ceramic GMT models a step backward in GMT functions as their bezel increments don't easily handle countries with a half hour time difference?
Some say that Rolex didn't bother because of the small population of South Australia but I'm sure there are a few more buyers in India and other countries.