Never underestimate the adaptability of the human brain! I am no test-pilot, but hop between LH and RH seats on helicopters and fixed-wing, and occasionally to weight-shift microlights, with no issues at all. It is little different from riding a bicycle, then driving a car, then riding a horse.
Verily, tis true - especially when one has instructed and then gone left seat as P1. Sometimes during training we put the P2 in the left seat, as per instruction and also during command training. It is different, but eventually becomes the same, if you see what I mean.