Yes I just tried it and it works amazingly well, good job WD ! Really impressed with the support of the MyBook Live !
There is one thing I find odd: Web Access is password protected (through wd2go account) and optionally if you password protected the shared directory with an account, you'll need another password.
But the Mobile Access doesn't need either of these things, just a one-time code to setup and then it's free-for-all. It would be better if the user password, needed to access a/the shared directory was asked also.
Because the WD2go app is going to be installed on many iPhones, iPads, Android phones and Android tablets, this is a very big security risk. I hope this gets addressed in the future, until then I'm deactivating the Mobile Access.