the 'hassle' isn't insignificant .... you maybe trying to synchronise the sale of your old car and pass the insurance across,The hassle you have to return is an email and a phone call saying “come get your car”.
if a problem develops after 14 days too , even if it's a franchised dealer you'd need to check you won't have to drive it back to them to sort out (like I said I'll have driven ~400miles all told circa 1.5 days lost)
It's fine if they are works fleet cars where you may have overlap and a lease company that bend over backwards.