I'd say that cleans from the floor are bio-mechanically similar to deads. Obviously, you're getting speed and an extended ROM in place of a partial ROM. AB has a point, though, about lack of tonnage. It's an important part of the "big deadlift, w/o deadlifting equation".
My guess is, though, you could easily have it both ways, depending on your work capacity. If you don't feel you're moving enough weight to maintain/improve- I should say strictly improve- your max, you can pull 6-8 fast singles @ about 70% from the floor after cleans. Or pick on your weak point with assistance.
Creativity is good, especially if you can keep an eye on the basics.