That's really interesting
From your GB experience is there a huge difference in cost between windowed + pad print and doubleshot?
I've got no idea, I'm afraid. I never got quotes on individual keys.
I would imagine that windowed + pad print would be more, since the window is actually a second shot.
Look at the windowed lock keys of a G80-2100, or the win98 keys from a G80-5000 or G80-3000HRMUS. The legends are just as black and just as sharp as any doubleshot legend. You only see a difference in colour when it comes to darker keycaps like the Originative Dolch windowed lock keys. My windowed Cherry lock key definitely looks sharp with plenty of contrast, just like a doubleshot.
I personally don't like this doubleshot key shown in the OP because I really am not fond of the new Cherry logo. The old one is much nicer.