I travel with my G-shock and Longines Zulu Time GMT.  I find the Zulu time to be versatile for daily wear and swimming /snorkeling and even dresses up nicely. I wear the G-Shock if I’m doing something a little more robust or if I’ll be in sketchy areas. I personally leave the Datejust at home. It’s insured, but way easier to replace the Longines and G-Shock.