I.m gearing the car up for my first driving school and I,m looking at the cgLock to clip on the stock belts to help hold me in the seat. The question is will I need to get one for the instructor who will be riding with me. Rule state that they should have the same safety gear I am using. Is this safety or convenience. Also any other suggestions for my first time out, I have taken care of braking. Thanks for your help.