It's just for traffic jams. You've wanted to do that once or twice.
Yea, I have to admit it can be a nice idea, but then I start to think about that one guy that wants to make a spit second lane change when the other lane starts to move a little bit. I doubt he'll expect a motorcycle right next to him when he makes his move.
Would you be allowed to do this on the right side of the right lane or the left side of the left lane, or does it have to be between the two? It would solve that problem.
I've been riding for almost 30 years now. That's one thing I never wanted to do. IMO it's too dangerous.