Edit: I want to add that I do understand the hesitation -- because what a headache if some customers take a warning in a readme that Poser works but isn't supported to mean that use in Poser should be completely error free and easy! So I get why even that might be a problem. (All I wanna know is whether the mesh will explode or not. :))

I really love it when vendors are clear about expectations. "Has not been tested in Daz Studio" tells me that if I want to grab the piece and use it in Daz, it may well work, or may need to be tweaked, or may not work at all -- it's at my own risk. (And a lot of the time reviewers will then follow up with their experiences.) "Will not work in Daz Studio" tells me not to get it at all.