I've seen these in the flesh and I believe they're the same ones Lambchops has...... great quality. Lever Protectors Alloysport
They are more for protecting the levers from being caught by another rider and activating the lever. They are compulsory in the likes of MotoGP these days because of a crash, I believe at Donnigton, where a rider crashed due to his brake lever being activated. Can't remember who it was but the crash was spectacular.
Yes these are the ones I have. Quality is outstanding only trouble is they show up the asv levers now as have a better finish than the levers lol Oh and alloy sport is part of oberon so quality is assured, I saw these being manufactured very impressive!