And looks are all that matter right?
Its working pedigree is all that matters, the length of a terriers tail really doesnt make any difference. This season just gone I had a 5+ hour dig to a friends border/lakey dog that has a full tail and its tail knew no different, this dog works thick cover better than any terrier I have seen and still its tail is just fine. You may have tail damage issues but its far more common in spaniels than terriers.
We all have the image of the 'perfect' terrier in our heads but its a dogs working ancestory that matters not what it looks like.
your sa