Now I know there's a fair consensus that you should never connect the kite safety leash to the rope existing on the back of most kite harnesses, with good reason.

However is it ok to attach if the harness rope also has a safety release? Do these actually work in reality? If so why arent they more popular? Surely this way it gives the best of both worlds, safety and safety leash freedom?

So far I have only found this one: http://www.manera.com/harness-exo/

Are there any others?

The old Prolimit Kitewaist Pro harness had them. Think they have dropped them since.

I kind of get the idea they are a solution looking for a problem. If Hadlow can ride and do handlepasses without needing to leash at the back - why does anyone need to do it? I always thought the handle at the back was for holding someone down when they launch massively overpowered going for that new woo record