I chose the silver dial because it gives a very nice color combination towards the yellow brass wheels and the blue screws, dials and strap. Also it's a classic looking watch, for me it was more classic, while the grey one is a too "modern" looking color combination to the over all idea/look of the watch. But that's a personal opinion.
Also this video attracted me towards the watch and color combination a lot:
https://www.youtube.com/watch?v=6Td7CXwwW7w
Please remind though that the video is about the 7027, which looks different than the 7057 we are talking about. But it still give the idea of much the watch looks like the gen.
I use it for my pleasure, not in business settings. I just love to enjoy the artistic display of the mechanics of the watch.