Digital crown on the left. Just feels a littler more natural when using the crown. The whole purpose is to not obstruct the screen, if your finger is across the screen trying to use the crown, sort of defeats the purpose.
This. To have it on the other side would be frustrating to use, you would have to lean over the screen every time you pushed the buttons. I had this problem with my Pebble before the AW. Uber frustrating. So glad you can change the orientation. It's actually really easy and fast to change it back again if you find you don't like it.