Was running through Dartmoor and got aggro'd by one of these, so pet killed it. I glance at the loot bags and see 'Crypt Seeker Sleeves'. Odd drop for a poacher... found it odd that it's not mentioned here.
Never seen this item in game myself, and no one else has sent it in. If you can drop me a line at maia@allakhazam.com with the stat information on them I'll be sure to post them to the site and link them to the mob.
Maia
Edit: Darn it, no HTML mark up allowed for the mail addy.