... an important classic watch this way, but if leather is the reason not to wear it, I would do it.
Your Breguet is a true beauty which deserves to be worn, and you as an owner deserve to enjoy (no matter the straps!). That´s my view of course.
This is a watch I expect to catch sooner or later. It represents the spririt of Breguet so well I feel!
Cheers! Abel