does that really work?
no
you can build it as bowazon or barb with bow and deaths web swaps or whatever else, the dps of poison charms is too low
its generally going to do a range of 59 dps (75% resist) to 472 dps (-100% resist) for 24 seconds (almost everyone has -100 PLR), for direct damage skills like guided arrow. For multiple shot you deal -25%
anyone who gets hit has all the time in the world to teleport back to town without risking dying
you can't townguard with blade sentinel anymore since it poofs when you go into town
think of someone with 3500 hp who gets tagged with a 59 dps poison for 24 seconds. Even if they just totally ignore it, it will take out less than half their max hp
meanwhile if a sorceress just builds as a glass cannon her guided arrows can deal ~24k fire with some -resists which might be as much damage up front per hit as poison deals in its duration, and if the same sorc just enchanted a zon spamming multi shot from the town entrance she could deal some decent damage multi spam
none of these will OHKO people
Contrast blaze in front of town. Its hard to quantify since blaze damage is multiplied by the number of tiles you overlap at once, which from a straight line is usually 3 tiles so they display blaze dps as 3x the per-tile dps. But you run over the same tiles 20 times and you're dealing 20x the listed dps. And a sorc with 16.4k blaze with -80% resists, dealing 20x her base dps, against a target with uncapped 75% resists who becomes -5% resist, takes 58500 DPS after resists and pvp penalty, enough to kill a 3500 hp char in 2 frames, enough to kill other less tanky chars in 1 frame.
D2:R