I'm left-handed but jack off with my right. While using the computer for porn, I move my mouse to the left-hand side and continue to work on my cock with the right. Whether online or not, I do enjoy the sensation of whacking with my LH sometimes as well. It's familiar but different.
Now if I stroke it with my right hand it feels like someone else is playing with my cock!!! Just kidding, but it does feel quite different.