No, no, I don't think morphing armour... But special armour, which is not availaible in creating new Brute. You can see this armour only in brute's avatar (when you choose your opponent or in cell) but not in arena while fighting... MyBrute is full of these Brutes som I'm sure you know it.
And yes, MB seems to be down... Maybe they are adding som new features

Who knows...