Guys,
Let's not forget that these controls are designed to be very easily removed, and once they are, ensure that a passenger is unable to adversely affect the operation of the helicopter (with the exception of the pedals). This is often far safer than leaving them in.
On the basis that the pilot is responsible for an A check each morning, a pre-flight check prior to each flight, and is allowed to undertake some basic remedial work......I think that most pilots who are rated on the machine have the ability to remove the collective and the cyclic!
Joel