How simple it is depends on how simple the clothing mesh is, so you really have to take it on a case by case basis - but you have it about right there. Anim8or preserves the original UV mapping through the cutting process, so there was no need to remap, with the advantage that the original textures still work. You may want to weld vertices though, if the original was conforming, to make sure it doesn't fall apart when you run the cloth sim. Yes, I know that's the point, but you want the falling apart to be controllable. :)