YES, YES, YES, YES, YES.

With my skil setup convic lowers res by 85 or 90%, I forget. Then remember there is the hell penalty of -100 res. That makes 185-190 resistance they have to have to BREAK 0. They need another 75 ress for max res (assuming there are no + to max lite res gear on), so that makes it a total of 250-255 res they have to have to get max res and make your foh do little dmg. Making them put on their 4 ptopaz'd shields or tgods or whatever will give you an advantage. I mean to put on tgods alone a barb has to sac 40 vita and 15 dr! (assuming hes wearing p dungos).

Bleh im tired so i might have strayed off track, but yes, you DO need it.