I actually found my blueface to be more secretive than my majestic. The BF I used to keep would bolt for cover the second someone walked in the room, and stay there peering out from the rocks. The majestic is more outgoing, and while it's shy, it will usually be out cruising the tank, even if someone is nearby.
What I've noticed with mine is that it gets really upset if anything new is added to the tank. I recently added a juvi mimic tang and the angel still has it's nose out of place. I'm watching for signs of too much stress as my experience and what I've heard from others is that angels do best if they are the undisputed boss of the tank. While the shyness is pretty much a charateristic of the species, individual personalities come into play as well. I think it is one of the prettiest angels available; doesn't grow to the big proportions as some of it's cousins, is relatively hardy, and has gorgeous colors.