I have always made a point of shooting at least one mag in each strong and support hand, left and right, each time I go to the range. As a result, I find it easy and am accurate from either.
Yep, been practicing consistently for decades using both hands, as well as clearing malfunctions reloads etc with one hand/off hand
Two hands is a luxury. Having your strong side hand is a luxury. Having your trigger (index finger) is a luxury. Dominant eye may be a luxury (or even a liability when using cover). Train for the case when you dont have the luxuries.