Unless you've got an emergency or some other very good reason to be on the ground, Not "Cleared To Land" is....Not Cleared to Land.
Ask yourself the same question for a take-off & you'll see what I'm getting at.
Always best to clear up any confusion with ATC after having done something positive like a making a go-around, rather than bluthering into a potentially unknown situation on the ground.
Some very good debate on this on the "Go-Around from 50 feet?" thread.
