I'm left eye dominant,and have always shot left handed. I don't care which side of the rifle the bolt is on,I have LH & RH rifles and can operate either just as fast.
I practice both left and right handed shooting, also. Which side you want the bolt on is a personal choice. But in my deer stand, if I have a shot out the right hand window, I will engage shooting as a lefty for the speed. If I were to shoot right handed, I would have to rotate my body all the way around and set up. Going lefty is easy and much faster.