I posted a reply similar to A_Sunbeam's but then I thought it is not helpful at all, so I retracted it.

What I want to know is what drives the Modeller and the Texturer, once they finish their product, to say: "we're going to make this a DAZ Studio only item." Perhaps Renderosity can set-up and provide them with a online sandboxed version of Poser loaded onto a Rendo computer and preloaded with basic stuff and shaders needed, computer on which they can login and work, get familiar with and develop a Poser product

OR

hire a person, one of the Testers, to convert the item to Poser format, with the creator's permission, of course.

Let's try to figure out a way to make this work for everyone.

EDIT: Hope everyone's having a fantastic weekend :)