Mimimum level on these is 12. Have had none conn lower then even to a lvl 12 character. Not sure max lvl yet though. Armor drops are pretty rare but sell nicely to merchants (few pp). With a lvl 12 twinked bard I can solo these by melee for the even and yellow cons. Reds I have to dot kite down before finishing in melee. The main area I have seen these in is one cave and it is hard to get singles. They can aggro on you before you can target them. And they run around a bit transfering aggro. Fun part is when you pull one or two and kill them then you go back in the cave and usually one or two more will come running for you. You pretty much have to try to get the entire cave in one pull. Tried kiting down there but it was too risky. 7 or 8 mobs hitting and stunning you just stinks.
Was passing through the zone and decided to get some of this Loda Kai armour to twink some of my alts and some newbie friends. Must have killed about 50 of the traders and poachers in a cavern within the cave system. Not one of them dropped any armour. Picked up a couple of weapons which sold to vendor for peanuts.
As A 18 beastlord I have fought at the trader and poacher camp in the tunnel from the path that leads west from Shar Vahl and I have yet to see any of the traders con higher than dark blue, and at level 19, many were conning light blue. As a side note, all the poachers were green. My best guess is that poachers are 7 to 11 and traders are 12 to 17. Poachers and traders drop ruined cat pelts (good for making patchwork armor to increase tailoring skill), poached hides for hero's shroud/blessed champion cape quest, lodi kai mail (luclin equivalent to banded), various H2H weapons ( including Horn of the Spirits- a nice 7/30 with stats) and coin. I have only seen the Drop of Lodi kai blood drop from the traders, no poacher has ever dropped it for me. My recommendation is, if you are a beastlord, sneak down the path into the cavern and move into the tunnel that leads away west from the camp. Summon your pet here as the pathing is extremely bad and your pet will drop off the edge into the camp itself if you summon it on the ledge that leads into the cavern. Have pet guard in the tunnel and you can pull into the tunnel so when the mob flees, it will run down the tunnel and not back into the camp, thus sparing you from having any unwanted adds.