Interesting point of view Scott,
My first 'nice' watch was a Navitimer and I bought it on the bracelet, mainly because of durability. It was only a few months later that I added a black strap and I was surprised how it changed the look of the watch. Many of my friends and colleagues thought it looked much better on the strap!
My St Ex Chrono comes on a strap and it looks great! I have seen pictures of it with the Pilot Chrono bracelet (perfect fit) but it doesn't look 'right'. As for the Portuguese Automatic, I don't even dare to think about a bracelet for that watch, it cannot be right!
By the way, I have been wondering about the argument of a bracelet for hot and humid weather. As you might know, Antoine de St Exupéry almost perished in the desert after a crash. At that time, do you really think he worried about not having a bracelet on his watch instead of a leather strap? I seriously doubt that....
Kind regards,
Cinq