Dutch design results in a differential construction...outer shell bigger than inner shell. It can then be suspended tightly on the hammock without compressing the down. In the day when differential cut models were not available hanging your underquilt was more difficult...getting just the right balance. If you were inclined to do so you could convert the Dutch technique into a separate baffle/shell design.
Gentle raindrops and mighty oceans...neither can exist without the other.
Time heals all wounds...but it usually leaves a pretty big scar.