Quote - Also I noticed unless all the gen geometry is named genital it will not hide it, and since I have 10  rigged bodyparts to the gens I cant name them all genital. So I am wanting to use a geometry swap if that will work.

You can just supply a pose file to hide those parts, I don't think there is any particular benefit to geometry switching.  The geometry still takes up memory and the texture maps are still loaded.  If your switch geometry is actually welded to the main character's mesh, it seems very likely this will make a bit of a mess when rendering with polygon smoothing on.

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