I can understand that a Travel Watch is not a priroirty for those among us who are not frequent travelers.
On another side, are we fascinated by complications we only use? For example, how many of the Chronograph fans use this complication?
As for your question, no, there is no 24 hours scale on the jumping second time zone digital hour. But the inner ring helps you to know if you are in the AM or PM area.
Best, my friend.
Nicolas