Actually Daz works with most Poser items that I have found thus far.  But I do see your point...  Daz Studio is free...  It costs nothing but a few minutes of time to see if a product will load into Daz...  If it loads properly then fine they can add the phrase that it does work if not then they can say that they tried it with Daz and it failed.  Whether they decide to try to tweak it from there is their decision.