For auction/bank/craft mules? Why not. Making DHs are throttled though. So if you want to make them, it could take a few days based on your luck. Each lockout is 24 hours, but not sure what is required for a lockout to happen. I tried to create a DH and it's name was taken and then I was locked out from creating a DH for 24 hours (though it never actually tells you how long). It's BS, but Blizz won't even respond to the forum posts about it, so better to know going in and just work around it.

- Souca