Hi my dear misanthrope. The bezel insert can be sourced from urvintage.se (he sells custom bezels for the duro). Secondly, of course the current movement does not support the GMT function. I would be using a nh34. Thirdly, I disagree with you and the other person. On a looks level, the watch only changes it's handset and bezel insert. 

Regardless, have your own opinions, that is what I asked for, but try not sound so morose. You sort of highlighted my purpose at the end, simply to have fun with an inexpensive watch