I guess my big reaction is why bother? The routing behind the neck leaves the reg sitting comfortably in your mouth, and makes donation a snap. Further, it's easy to practice air-sharing that way, because restowing the hose is simple. If you stuff the hose under bungie, then once you have practiced deploying it, somebody ELSE has to help you stow it again.
People have this initial "eeewww" reaction to routing the hose behind the neck, but once you have tried it, you realize it sits quite naturally that way, and is very easy to donate and restow.
People have this initial "eeewww" reaction to routing the hose behind the neck, but once you have tried it, you realize it sits quite naturally that way, and is very easy to donate and restow.