Your post just gave me a couple of good chuckles with images of recent fundraisers/black tie affairs where I would have guessed about 50% of male attendees were sporting Apple watches. Really bugs me (obviously bugs you too) but that's not to say everyone needs a Rolex or even anything Swiss. Just something nice and dressier feels like a must.Honestly I finally got a 16233 date just two tone. I know plenty of people will chime in and say it's a sport watch not a dress watch but for me it just feels better with a suit. I also try to match my metals and the two-tone makes that easy. I get away with wearing the two tone with silver or brass. I wear a blue blazer with gold buttons pretty often and it lends itself to that. It is purely personal choice. I can not stand when people point out that a watch is not "appropriate". In a world were I see apple watches at black tie events and on the wrists of business men in tailored suits I think the what watch is appropriate has gone out the window. I am fully guilty of being in the mood to put on my speedmaster and wearing that with a suite. Many will say it's wrong but the ones that actually realize it's wrong are very far and few between. So my reasoning for not wearing it with a suit is my personal opinion, if you like it wear it. It will be lightyears beyond all the guys sporting fitbits and apple watches in my opinion.
I suppose now that I'm thinking about it - a Submariner would look a bit out of place in a well-fitting suit. Thankfully - like yourself - that's not a daily worry of mine.