@ Riot Axes: Before removing Poacher's Knife from the game completely have you considered...

Have you considered making the Poacher's Knife an enhancement like Cinderhulk, Warrior, etc. and changing up what it does just a tad? I think the biggest problems with the item now come down to two things: It makes your intent to counter-jungle too obvious too early and it is too similar to Ranger's Trailblazer in how it works while lacking strong benefits. Making it an enchantment would allow you to get it shortly after the game begins, making your intent not-so-obvious right away and changing the effects to actually reward you with unique rewards for counter-jungling would allow it to be useful without it seeming as if it were the little sibling of the Ranger's Trailblazer.

My idea is to change it: Either keep it as-is but make it an enchantment or make it so clearing a camp with the Poacher's Knife drops the same ward as the Farsight Orb trinket. Rewarding a counter-jungler for clearing a camp by granting vision of that camp ( so you can see the Jungler or anybody who enters the camp area ) would give your team a great reward for taking such a great risk. Even if this isn't done as an enchantment but the item itself gets reworked I think the idea is worth testing on the PBE given many players have already stated in various boards have stated they would like to see similar ward-related features brought to the Poacher's Knife.