Demonology Tank Glyph (MoP beta)

Decided to go messing around in ICC with the new Demonology tank glyph. Armory - Beta build - 15464 Glyph of Demon Hunting - Reduces range of Demonic Slash, causes Mastery to provide damage reduction instead of damage increase, makes Metamorphosis into a toggle (can be permanently active) and turns Soul Shatter into Provoke, allowing you to taunt every 8 seconds. With a 50% damage reduction 3 minute cooldown, numerous self heals, Soul Link now splitting 50% of damage with your demon, the renamed Demon Soul providing a mastery boost as a cooldown, and mastery lowering damage taken, 6% reduced crit chance against you in Metamorphosis, 600% increased armor in Metamorphosis... Demonology is easily the most durable tank in Mists of Pandaria beta. I’m excited to see how serious they are about making Demonology into a tank. Are they just messing around, or is it a real plan? I guess we’ll have to