I bought this for my girlfriend to help alleviate cramping/pain she was getting from traditional straps. It worked well for this and she can ride hard all day with no discomfort.
However, it takes a lot of time and adjusting at the top of every run to get them tight. The easy-entry back does not work for her, she cannot get her foot out or back in with the binding tight enough to ride in. Furthermore, when she adjusts the straps for each run she needs to loosen both sides and then tighten both sides at the same time to prevent one side of her foot being squished.