I have a fat wrist (amongst other things) and the sport band SS is what I had preordered so I tried that on. It fit with only one hole to spare (why is this post sounding so dirty), then I tried on the leather loop and it fit MUCH better. the leather loop is so long it almost looks comical laying on the table, but it works and has tons of adjustment potential.
Overall, my impressions of the 42mm was that it is SMALL. I asked if I could try the 42 on and he said, that is it. I was expecting it to be larger and heavier, just seems a bit cheap to me (my opinion).
That said, after my try on, I have decided it's not worth the $634 to me, but I plan to keep the order and sell it. The try on watch was just running a demo, but i stood there for about 15 min playing with a "live" one and the thing felt buggy and confusing. Stocks app just spins and doesn't load (not that I care, but still) and no lie, the watch crashed to an apple logo while I was adjusting watch face settings. I'm out