It might be a bit trickier to insert, but smaller labrets make a good nose piercing.
If you get a longer labret stud, it can be suitable as a conch piercing, as long as it’s not too tight.
The flat back of labret studs makes them particularly comfortable for tragus piercings as they won’t get in the way of earphones or hats.
Again, the flat back is actually very comfortable compared to the usual bulky back studs of an earring.
Finally, the flat back is again the reason labrets can be a great helix piercing. The piercing won’t dig into the side of your head like bulkier jewellery.