In most cases, you will have devotion (which will provide guard), so potions go to paladin anyways.
Hyegun Hat is sometimes available, sometimes not, check your server for that.
I never wear orlean gown. It is less punishing then phen card in terms of casting time, but you lose armor slot (holy robe). On non demons, it is considerable.
I've never said that my build is better in terms of damage taken. PD would be a bit better (those 15-20 point or what was it), but you can recast steel body, which is something you absolutely need in endless tower.
You didint said that but I think that was your goal given from the Equip style. Well, anyway. What do you think about Bio MVPS? Ever tried to tank them with Champion?
Because honestly, I never had to deal with them, so no true experience with them...
Thats why I am asking. Most people try to lure them into the corner I guess and use ice wall if I remember correctly.
Edit: I made some quick tests with my Full tank champion build. I could tank Assasin cross MVP, High Wiz and Seyren.

) I mean, I got decently fine. Its hard for me to heal myself and keep me alive. But its possible...

Devotion Paladin would have it a hard time to keep him alive.
BIO3 MVP's are hard as f*** because there Mops also do crazy things. Good thing is however there are many demi human reductions things... They also dont have high HP.