OH TWO MORE THINGS: Patch goes where the curse seal is canonically? Also, why would Sasuke be thinking "No choice now"? It's the only indication we have that he's at all reluctant to wear the patch. Well. Except Itachi, but I'm not sure if he counts.

Plus, one correction: the patch might suppress emotions, but apparently Sasuke's under the impression that this is not why he didn't get attached to Sarutobi.