Here are some pictures of the new scupper drains on a 2015 Revolution. I'm assuming they will be the same on the TI/AI. One of the pictures shows a TI cradle laying on the overturned hull. Another shows a piece of 1.5" pvc pipe in the scupper groove.
The piece that lies in the scupper groove appears to extend up into the scupper as a hollow cylinder.
In other words, it's all one piece of plastic. It looks like the whole thing is held in by two screws but the dealer could not tell me if it was otherwise attached with any kind of adhesive. Fortunately, the screws are into molded in nipples as with other fittings and do not breach the hull if removed.
I'm hoping that this piece can be removed completely and easily. It makes sense that it would be removable because of the need to replace it if damaged. I will certainly take mine off immediately. Not only do they hit the cradle , but they also interfere with PVC bunks. Someone mentioned in another thread that you can move the bunk over on that side. This would change the way the boat aligns and stays centered on the bunks. I'm planning to call Hobie and get an answer on whether the drains can just be pulled out after removing the screws.
Hope this is useful to others who are wondering about this new feature.