It is easy to draw a comparison between Alexander and Savage. Small frame guys not afraid to stick their nose in it, quick, fast, ball skills, competitive at the ball, instinctual. It's no coincidence that in both cases some analysts projected both these guys to the slot to go against the protypical small, quick receivers.
Make no mistake. These guys are a perimeter corner and a free safety, respecitively. There isn't much doubt about Alexander's spot now, where more upside can be projected, and there shouldn't be with respect to Savage.
Now, situationally, might Savage take on a slot in some man coverages? Sure. Week 3 against KC and Hill might be an example. But make no mistake. Everything about him says his primary role is prowling the back end.