Not looking to start an argument or convert any one. However you carry is the best way as long as it works for you.
In my training, I discussed concepts of cross draw and strong side carry. I came to the conclusion that cross draw has several disadvantages. (It think this info is beneficial to any one who carries or wants to do so)
1) more unsafe than strong side: when drawing you sweep the muzzle perpendicular to your body pointing the firearm at anyone in that direction. An unnecessary safety risk.
2) disadvantage for you: most encounters occur from 0-21 feet or less (arms length) When crossing your body you exposing yourself to being physically engaged and prevented from drawing. That hand is useless if it is crossing your body. Make sense?
3) time: if the sights of your firearm are crossing in front of your body it takes longer to acquire your sight picture even if it is just your front sight
4) drawing distance: your hand must come from one side of your body to the other side. Then back to center. It takes too much time to draw the pistol so it can be used.
Now I understand that certain configurations (clothing) require cross carry. I for one will carry strong side always if available. You are welcome to disagree