Nintendo introduced the Joy-Con controllers meant for the Nintendo Switch console. One of the best features of this product is the difference in colors for the right and left controllers.
This means that, yes, one controller is held in one hand and the other in the other hand. Like this, the gameplay experience is brought to a whole new level. The different colors for each controller also make it easier to remember which one is for the left hand and which one is for the right hand.
Another cool feature is that you can give one of the controllers to another person and play one against the other if the game allows it. Furthermore, the 2 controllers can be connected together to act as a single controller.