Thanks for this thread. It was a question I was going to ask you all myself.
At a routine checkup in Sept '17, my HbA1c was 37mmol and the nurse suggested, no insisted, on a glucose tolerance test. The 2 hour reading was 12.1. Consequently, I was diagnosed as T2D. According to my diabetic nurses: once a diabetic, always a diabetic and they stress it's progressive i.e. even with good control, it will get worse with age. I'm still reading, and seeing much that says it's reversible, but at the moment I'm sceptical. To me, reversible means I can again eat a really good cheese sandwich when I want (Ever a treat, as I've always known it would make me put on weight).