Twice as much trouble and twice as confusing, we get two Doctors for the price of one. And just like his genuine counterpart, the Ganger Doctor hates to look back on his past lives. Of course Rory is going to sympathise with the Gangers as he spent time as an Auton, not really that different from a Ganger in the sense that they are fake humans.
What a surprise, the two Doctors get along, whcih is a bit surprising as any other time you have more than one Doctor, they biccker with eachother. Though that was with different incarnations rather than clones, but you can see what I mean. What a plot twist! Amy was never really there at all; the only time in this series when she was the genuine artical was on the Christams special. Ha-ha!
The reason her ganger saw the eye-patch woman finally makes sense now; since Amy was litterarily being watched over from a hatch, it would make sense that her ganger had visions of her.