The endurance set up eliminates the pressure from the stirrup attachment at the top which is triangulated through the internal rigging via the hard use buckle with hard use. Putting it at the bottom eliminates any top pressure. The downside is that it restricts leg swing/movement..which can be a good thing with some riders. It steadies up the leg & keeps it in a centered position. If you can get used to the endurance stirrup attachment, it is the best for any kind of distance riding according to Dana.
Kaaren
