I'm really happy with my SeaArc
The quick release buckle and length of leash gives me the flexibility to be securely harnessed prior to launching through the surf when conditions allow - a distinct advantage when racing.
Using the SeaArc has been a minor epiphany, solving problems that I had resolved myself to having to deal with.
My leg leash tangles are a thing of the past. The mounting of the system gives better ski orientation to waves when you do come off making for easier remounts, especially in heavier conditions. Extra convenience and safety, what's not to like!