Yes, I also read it that you could select alliance at the beginning. Not change side anytime you want.

My question is this: If you buy the Imperial CE, do you only have access to the white horse by playing an Imperial, or Is the mount available to all of your characters?

Good question!

Also do u have acces to "transmogg" ur gear to imperial liking with all chars or only as imperial AND can u create imperial armor with all chars or only as an imperial?

Most of us would tend to think that way. But I've seen cases, exactly like this, where one could not create those extra character types prior to the official release date. And the company's explanations made no sense at all. It was a Digital Download purchased through the company's website. But they hadn't taken the time to set it up right.

So color me concerned... Because I wanted to reserve some names and didn't want to be forced to create "place holder" characters.