I could come damn close in the stuff I do. Here is an example image. Even the trees are quads as they are just crossed planes with tree textures on them. The window trim is segmented to avoid large polygon counts. The doors are all quads. The curved bird houses are all quads. So if I try to keep away from 45 degree miters as in the images posted above I will not have an issue in Poser? I can for sure deal with that. Seems then the only issue would be the 90 degree corner issue. This render was done in Vue so you should not see any smoothing issues....