Tony
As you live in Europe I would definitely recommend a Magic Marine harness, Velcro adjustment hidden behind flaps to prevent catching, safety hook release, awesome back support and under 1kg in weight <img src="http://www.catsailor.com/forums/images/graemlins/grin.gif" alt="" />
Got one of those now <img src="http://www.catsailor.com/forums/images/graemlins/smile.gif" alt="" /> The main strap to the spreaderbar constantly slips out of place which is very annoying.
And the safety hook release prevents you from putting chickenwire cleats on there, but I solved that with an angle grinder.
About those safety releases, has anyone actually used one of those? Would be cool to test out in a pool maybe with an old H16 and a safety diver or something.