Having the halyard cleat on the mast also allows the crew to face forward with their head up (toward the raising spinnaker and traffic) instead of being head down and unable to see anything else that is going on. I had crew recently say that they believe they prefer it on the main beam but after being exposed to that again, decided against it. We also run the halyard through a small block on the front beam so that it can be uncleated (from the inverted cleat on the head-banger on the mast) from anywhere on the boat with a simple tug.

The infusion looks like it is coming with the swivel head cleat mount on the leading edge of the mast so it can be accessed from either side. Personally, I don't think I would like the wrap you get around the mast if hoisting from the opposite side but I haven't tried it or seen it in action.