I'm not a fan of the dorsal attachment or full body harnesses, which transfer over from other industries involving high access work.
In a previous life as a mining supervisor, issued & audited working at height activities & my first questions were always around amount of slack in system (dynamic falls) & self rescue in event of being suspended by dorsal attachment point. For an overweight adult hanging in a cheap, unpadded harness by rear attachment, the time from fall to fatal suspension trauma injury is down to singular minutes, generally far too quick for third party rescue in many applications.
In my experience, good climbers are both fitter & more experienced in taking falls & recovering from these, including inverted & lateral falls & object deflection (ie: bouncing of ****), but self recovery from a small tumble & rear suspension is pretty darn tricky, so standard front bridge attachment gives many more options for rapid self rescue, along with easier slack monitoring in the first place.
If using dorsal attachment, energy absorption lanyards & equipment on harness to self rescue, quickly, are essential, otherwise the system can be just as dangerous as hitting the ground.
In my opinion, if persons are blindly heading aloft in an EWP of any format with a generic full body harness, dorsal attachment & static lanyard it's a largely false sense of security.
