I played a game with this build today against an Earth Wizard that showcased how ridiculously good at attrition this build can be. I killed 3 Iron Golems, a Gorgon Archer, an Earth Elemental, and Malacoda. The only creature I lost was Brogan, which was the only creature I didn't invest in supporting. I still had 2 Bridge Trolls and Samandriel at the end, each with 2 Armor. One of my Bridge Trolls probably took something like 30 damage over the course of the game, but just Would. Not. Die.
My opponent still had another Earth Elemental and another Gorgon Archer at the end of the game, but once I started focusing his mage down, he died in about 2 rounds. If he had played Devouring Jellies instead of Earth Elementals, I might have been forced to try something else, but the bonuses against Nonliving on Staff of Asyra and Samandriel allowed me to repeatedly Stun the Iron Golems, and he was going to guard with them constantly anyway.
Bridge Trolls with Armor backed up by healing support are just amazing. And trying to batter down someone with 5 Armor and Veteran's Belt is incredibly inefficient even if you have a bunch of 6-7 dice attacks to throw at the problem.