Indeed TRC. Another factor is the anchoring requirements for restraint vs fall arrest are different, there is a snatch loading on the hard point used as a fall arrest to be considered.
Also, read an accident report recently of an Australian Army Chinook crash in AFG. Only person killed was on the ramp during flight using a fall arrest strop, inflight upset caused him to fall out the back, the fall arrest strop extended 2 metres as designed to, and he was left hanging out the back unable to get back in when the helo bellied in, he was crushed under the ramp, everyone else survived.
250 page report here
http://www.defence.gov.au/publicatio...May11-Case.pdf
Last few chapters relate to the strop used. Suited to a building site, not a military aircraft.