Thanks for the book recommendation!
I am diabetic - or at least I was until I went on the ketogenic diet. I am clearly one of those who benefit from the low carb way of life. But low carb for me does not mean no carbs. I make sure to get plenty of complex carbs from vegetables like broccoli, cauliflower, greens, and so on. Just no starchy or sweet vegetables like potatoes or corn. And of course no rice, pasta, bread, sugar, and so on. I stay under 20 carbs per day and I find that's pretty easy to do.
We're all different and like you said - it is good to keep an open mind and find what works best for your body type and your genetics and your lifestyle.