Precisely as you can plan you cloth to be either conforming or dynamic you can plan your cloth ahead to be both conforming and dynamic. That is specially important if you have a whole outfit and not only one piece.

Even if it is not perfect it is an advantage to have cloth that are both conforming and dynamic so you can work with  conforming during composing and switch to dynamic before the final rendering.

The question of resolution is rather irrelevant as it is only a mouseclick (subdivision away).

When you work with tools such as Marvelous Designer you always have to retop for the conforming version the dynamic you get more or less free, it would be waste to throw it away.

Between vendors there are competition -everything else equal the one who offer both conforming or dynamic versions gets an advantage. As always - it is the customer who decide.