I’m not sure what to think about this one. Lord knows that getting stuck upside-down in a tree well with your skis or snowboard on and NOT being unable to get them off, would really be a bad situation. I’m wondering how easy (or hard) it would be to get out of a Dynafit binding, while being upside down and not able to reach them with your hands. I roll with TLT Speeds on a few of my setups, which have a smaller toe lever than the Vertical style Dynafit bindings, so it might be harder to manipulate and pop open. In addition, the toe-pieces are usually locked out when I’m skiing, which would probably make them harder still to get off. I guess this is another reason to get an AvaLung, because an airbag ain’t gonna do diddley in a treewell.