The docking of tails is banned here in England with an exemption for certain working dogs.
I believe that if countrys are starting to ban the docking of tails then the kennel clubs should recognise this and think about changing their standard.
If a vet wont do it and it is left to the breeder themselves things COULD turn nasty.
I know there are many many breeders out there who know what they are doing when it comes to docking tails but I bet there are some who dont.
Take a look at this link and you will see some photo's of DIY docking jobs that have gone wrong because they were not docked at the correct age:
Tail docking information from the Council of Docked Breeds
A procedure like this in my eyes is best done by a vet, and if the vet refuses then this could cause problems.
As I have already discussed, my Poppy's tail was not docked because it is not allowed here in England but she has broken the end of her tail by accident (I woke up one morning and it was broken dont know how she did it).
I took her to the vet and the vet said she would be fine because it was right at the end of the tail and she isnt in pain, she told me that it would be more distressing for her to try and fix it so just to leave it to heal.
This could have been avoided if her tail had been docked when she was young... so there are arguments on both sides.