"I know DAZ tests for pokethrough and fails anything that has pokethrough when using stock poses with limits on"

How is that possible when there is no cloth, commercial or otherwise that even pass the test of the ordinary stock poses that ships with Poser?

The advantage of making your own cloth is obvious. With tools like Marvelous Designer you go from concept to finish in 10-15 min and when you know how the figure is going to be used it's easy to avoid pokethrough.