I am now high enough in CH to tame one of these guys and have yet to see a baby since. However, a guildmate gave up CH and gave me his TMB becuase he couldn't bear to destroy it. I can't wait to try this guy out in battle.
This is one of the best tamable pet in the game. DMA has 5% more kinetic but in my experience TMB is better tank. He manage to stand in the fight until the last moment.