But does using the sidestick as easy as using a conventional yoke, in the LHS, providing you are right handed?
Yes it is easier,as you do not have the akward arc motion of the wheel around its axis (it's now quite noticeable to me,after my 'Bus experience}.
The over correction that pilots can have when hand flying the Airbus, is more to do with the "flight control laws" than the side stick versus a yoke
I have seen Pilot-induced-oscillations on every airplane I have flown.Just depends on how alert/tired/"switched-on the pilot is at that particular moment.The "KISS" motto was invented in aviation training long before the 320 happened.