When I first started knitting socks I tried using the two at a time method. I'm not sure if I chose patterns beyond my skill level, used the wrong sized needle, or just didn't have the experience but my socks were terrible. They had huge ladders up the sides and were way too big. I fell in love with sock knitting after trying DPNs and swore off the two at a time method as not for me. I've decided to give this method another try for the fronts of Blueberry.
I was worried about my fronts matching perfectly and this method ensures that even my mistakes will line up. It's taking some extra concentration from keeping my yarn from twisting, but otherwise everything is going smoothly.