The WZ and 'farming', using the same stat.
Or, you build two FW, for two purposes: WZ (and bossing, alcanez?) and farming And these two FW will play Monster Survival too, so you will get many rubies (and manual Book) Well, if you are not easily bored type
What the purpose FW on warzone even when FW become hard to kill? The earthquake skill can paralyze 'enemy'. But since it is an area skill, and on WZ, our teammate will still receive the damage. Well, I haven't play Ice Wizard, but IW can freeze the enemy, and it is not area skill.
What I mean is, if you go to 'full VIT' type, it will be for bossing. You will be disappointed if your purpose is just for warzone. Think this way: if your FW is the last (wo)man standing in WZ, it's just a bonus
I play in Arus, so, finding the boss is not that difficult I don't know in Duran. queue?
I will inform the result if I had decide to make 'full VIT' type. But for now, I play other classes (INT type, sharing the same accesories). So I don't know when will it happen