Because this game is subscription-based there should be no reason to use any sort of DRM system on the installer. If you want to share the installs with your friends, they will be able to install the game, but not create an account since there will be only one CD key with each set of disks. This also means you will be able to make backup copies of the installer if you wish.

One of the perks of doing an online game is that piracy doesn't come knocking too often.