Yes, but he is better to have, cause let's suppose you get in another pt and can't find wc. No party would seek pp cause he buffs members 1 by 1 and that's noobish. Plus wc is not bad for duo. He just doesn't have bts (useless), btb (useless), zerk and ww (can get it from a potion :P )
Ok, what server do you play and run out of MP on archers? Except if you raid with SRs ....
Stop playing l2j. A single archer pt on db can kill varka/ketra/sub etc raids in 10-15 min without tank.