9% miss? Are you taking it as read that the subject has no hit whatsoever? I think you'll find the dps gain you're indicating is largely from the hit increase, not from the trinket proc at all.
I'm a hunter. Looking at Cheeky's hunter spreadsheet and substituting three of my gems with Rigid Bladestones to put me safely over the hit cap (ah, fantasy WoW), I take a 5 dps loss if I replace my Hourglass of the Unraveller with the poison vial. If I replace my Bloodlust Brooch with it, I take a whopping 9 dps loss. And for the record, if I switch my old Bladefist's Breadth back in and replace it with the vial, I *still* take a loss of 3 or 4 dps.
So this is a terrific trinket if you aren't hit capped - but otherwise, it's a bit pants. IMO, hunters should always pass this to rogues, who need in excess of 200 more hit than we do. A hunter will hitcap and replace this with something that buffs their damage before they ever leave Karazhan.
I'm a hunter. Looking at Cheeky's hunter spreadsheet and substituting three of my gems with Rigid Bladestones to put me safely over the hit cap (ah, fantasy WoW), I take a 5 dps loss if I replace my Hourglass of the Unraveller with the poison vial. If I replace my Bloodlust Brooch with it, I take a whopping 9 dps loss. And for the record, if I switch my old Bladefist's Breadth back in and replace it with the vial, I *still* take a loss of 3 or 4 dps.
So this is a terrific trinket if you aren't hit capped - but otherwise, it's a bit pants. IMO, hunters should always pass this to rogues, who need in excess of 200 more hit than we do. A hunter will hitcap and replace this with something that buffs their damage before they ever leave Karazhan.