You can get all of Generation 4 (M4, V4 etc)  Clothing to fit Genesis through the Autofit tool that is free with DS4 pro (which is free)

You can buy a tool called Gen X to import all your Gen 4 characters into Genesis if you have the Gen4 shapes for Genesis (luckily I do but I haven't tried my Gen X yet)

Only big problem is shoes they won't transfer yet... But I'm sure someone will figure it out.