Tanks using their enmity combo while being OT

[Kotemon]

I rather tanks use enmity combos every so often over pure dps for the sake of not seeing the MT die and the boss heads over to the mage or one of the healers because OT isn't a warrior in the top 3 of the boss' to do list. With that said if OT in pure dps mode with no enmity combos is fighting hate, then MT should let it go and switch to OT. The only time to complain is when said OT is in tank stance the whole time. Remember if the MT dies should it go to the healer/mage/dps roam or to the next tank. But since OT is a warrior its more or less due to it being their better dps rotations. The next question to this would be, how many warriors are present and are any ninjas involved? In theory one warrior could do Path and the other Eye. But ninjas also have a slashing debuff and does it matter if warrior OT and ninja both use their slashing debuff?