I have a plugin for Cinema4D that does that mod to the normals.

It doesn't modify the imported geometry at all. It's a render-time effect.

The idea of course was to save time and memory by NOT add fillets and chamfers to the model and letting the plugin smooth stuff out...

Depends on what you're trying to achieve - prob is, if you don't have similar for your other render apps, you're better off just modeling in the fillets.

-Will