Honestly I never actually search for them, but when I come across an image tagged \m/, probably half the time it should have been \n/ and I correct it. Just to check my suspicion I searched \m/ and on the first page I instantly see numerous examples of \n/.
Is it really worth having them as separate tags if no one remembers which is which? Also some of them are kind of halfway with the character's thumb making a circle with the middle and ring finger.