the problem is that it's very difficult to get tubeless tape down into the recess and apply it evenly. on the set i reviewed earlier this year i had to more or less stretch the tape across the recessed area to get it installed cleanly. but if you can manage to shape the tape into the recess, that would seem ideal
With my Stans the tape reduced the depth even further. By feeding a skinny ass piece of tape down the middle I picked up the depth to get a tire on. However, this negates proper sealing so I'm back to a tire and tube combo.