That works fine for a car. In most modern cars the mechanical lock is about to become a secondary solution anyway. Most people use the radio control in the key in my neck of the woods.
Motorcycles however have a remaining risk of lock freeze ups even when the locks are lubricated. When that happens while the key still is in the lock, the trick with heating the key can´t be applied.
The motorcycle also requires an extended pre-ride check to make sure that all of the controls work smoothly both ways.
When I drive my car, I do not even carry defroster anymore.