My problem with loading/unloading a Single Action with the left hand, gun held in the right is that you have to reach over (or around) the gun each time. For me, its easier and simpler to hold the gun in my left hand (and not in a shooting grip) and use my right to work the ejector and insert fresh rounds.
Of course both ways will work, its just a matter of what works best for you.
Of course both ways will work, its just a matter of what works best for you.