Cool features, but not oval.
I bought the O-Wall over other ovals (such as the BD Oval) because of the keylock gate. The keylock gate works great, the biner has a great narrow nose which fits well through small holes, and a very clean design. However, I have two gripes with it: it is heavier than every other oval on the market, and it isn't even oval! It's an oval-ish D-shape. This poses a problem when using it with pulleys like the Petzl Ultralegere which need to sit parallel to the carabiner's spine. A problem when using it for a hauling or rescue system.