"and your not wearing a jacket then you have no legal backing when it comes to apportioning blame."............. Thats exactly why people dont like them, they are not there to stop people getting hit by props etc, invariably its the fault of the person getting hit anyway, but it then gives them or their surviving kin a chance of saying it was the pilots fault for not seeing this person walking into his prop even though he was wearing hi-viz. In short the hi-viz culture goes hand in hand with the "it was someone elses fault and im gonna sue them" culture