Sprite or movie clip?

Hi, I’ve read that it is more efficient in AS3 to use sprites than movie clips when I don’t need timeline. I want to use only AS3 for moving graphics, not timeline, so it would be good to create sprite objects. But is there a way to load vector graphic made in Flash to it?

I mean, to use Flash CS3 graphical editor to draw something, then use AS3 to move it. If there was a possibility to create some drawing in Flash, then save it to library as symbol, then load it in AS3 to a sprite (like I can load a bitmap). But only “Movie Clip” symbol instances can have names, not “Graphic” instances, so it looks that the only way is to create a Movie Clip in Flash.

It means that if I want to draw in Flash and not in AS3, I must use Movie Clips?