purely hypothetical response: unless you plan on retopologizing and making new UVs and weight mapping, they are going to know,use the models for reference and either create your own or pay the extra for Interactive License
Well, the Daz license allows the use of models to create 2D images with little or no restriction. So, unless you're building a "really 3D game" (i.e. you're putting the mesh into the game and having the game render in 3D) there's really no issue.