If you suck at aiming no !
But if your good at aiming it is worth it a poison/plague zon with guided is most likely recipe for carnage.

Edit:

The good thing also is that the dmg is raising very fast with +skill it about 1.3k~ more poison damage per skill level once both poison and plague jav are at 20. So one +1 jav skill grand charm = that much more dmg with 3-4 of those you can forget using +skill item and focus on resist, absorb, damage reduce and stuff like that !

P.S. Since there isnt any bugged items and well it seem very easy now to get high resist, sorc wont be as good against zon. The good old TS + Tele wont work very good as i actualy start to see some skilled zon ! Yes not only shoot and say "Haha noob i owned joo !" They use skill like slow missle 2 slow up TS and many of the Sorc skill ! I know some used it before but many ? No ! It s nice to see more skilled ppl and less noob ! Gogo 1.10