Blinky - I'd like to see CFS send a letter to every member stating that!
Its not hard, its provided free of charge for your protection and safety, wear it or suffer the consequences - injury, no work cover, no compo, etc, etc, etc!
If people believe they are mature enough to be in the CFS (or any service for that matter) then they should be mature enough to wear the PPE/PPC provided - it's not rocket science, even five year old kids can work it out.