As an ageing single hander, wearing a harnessed PFD(SecumarPro or BalticRace) at all times while out of the cockpit inshore and at all times while on the high seas, l think I could give a hint or two when it is a total pain to wear a harnessed PFD. All this contrary to some demands and allegations!
Auto PFD's regularly go off when spray hits the boat in rough seas or freak waves. Even in heavy rain.
This is a fact, and those should be avoided by competent crews keeping them for visitors who don't leave the cockpit at all.
The manual ones are good to wear on the bow but when the going gets rough and one is obliged to work on his knees or crawl along on his stomach the firing chord of the west gets caught on any protrusion or lines flopping around in the wind like whips, unless well tucked in.
Once the luffing jib clew hit my west and the zip blew open and the airbag ended up flopping in the wind but not firing the cylinder.
It could be very difficult to go forth with a tether attached crossing the lee sheet(s) while the tether is being slid along the jack line. And this is on a cruiser at 6-7 knots not a racing yacht at 18-20 knots.
I understand why pros like at the VOR are not wearing neither PFD's nor harnesses 24/7. It would just be simply impractical.
As far as Scallywag's mishap is concerned, l see the situation as unfortunate and perhaps avoidable but handled with professional aplomb and Witty's public hanging on arrival at HK perhaps could be postponed.