I would be really interested in your experience DOD, I have never seen one in action and can only make assumtions on the way it is constructed. My only concern is using it with a jointed mouthpiece.
The single-jointed mouthpiece applies pressure to the tongue, lips, and bars. Due to the V-shape of the bit when the mouthpiece is contracted, it causes a "nutcracker" action, which has a pinching effect on the bars. It also causes the joint of the bit to project forward and push into the sensitive roof of the mouth, causing the horse to lift its head to get away from the pressure.
It seems to me if you lift the bit up in the mouth the pressure on the lips, tongue and bars would be less but the joint, being higher in the mouth, would still project forward and being closer to the roof of the mouth would hit with a smaller, less harsh pull on the reins so the rider would need a very much lighter touch on the reins. The horse will still try to lift its head to get away from the pressure on the roof of its mouth but you are adding pressure on its nose, because the bit is physically attached to the noseband, forcing the horse to drop its nose.
As I said before I think the Worcester noseband would be effective with a straight mouthpiece but would advise caution using it with a jointed mouthpiece. I appreciate you are talking about using it with a straight mouthpiece, I just wanted to make it clear to anyone considering using a jointed bit what the consequences might be.