You're better off with more spokes. If one of the 24 spokes breaks, the wheel will be unusable. It will rub the brake pads. And it likely takes special spoke wrenches so regular DT ones won't work. And it will be about impossible to find a replacement spoke. The wheels are a liability.
Agreed. But who would go on a tour without the correct spoke wrench and some spare spokes? To me, the bigger issue is this. If one breaks a spoke in a shower, or at spot where it's not good to pull over, or just an hour from the end of the day's ride; it's a nice option to be able to ride through until one finds better conditions for repairs.