How the world has changed . It takes a while tho.
I once read decades ago, a Safety Digest article about 10 FATAL Auster accidents in which they postulated 9 would have survived if they had been wearing shoulder harness, instead of just a lap strap as was in the good old days.
Later when I got an Auster, I installed shoulder straps. Here in Oz , getting it on the Oz register, I was required to uninstall the shoulder harness.!
Before departure, once around the corner, the shoulder straps were replaced. I could at least fly away happy, that the restraints would prevent me from bashing my head on the instrument panel in the event of misfortune.
I have been 'strongly encouraged' for the past 50 years to have that 'upper body restraint'
Good to see they're finally onto it !