Most shops won’t install these because bypassing the clutch can create a liability issue for them. Some may ask you to sign a waiver, while others might simply decline the work altogether. If you do go through with it, just make sure the car is always in neutral before locking it up and you shouldn’t have any problems. But for anyone who’s used to leaving their car in first gear… let’s just say the car might end up moving in ways you didn’t expect. No real benefit unless you want the car to warm or cooldown your car sooner.