Got an implant a few days ago when spotfilling for guild's 3rd ops group. They were running alts and the loot rules are "equip mains first". Outcry on teamspeak was "omg, omg - we've been running this operation for weeks and the first implant drop we see goes for this lucky SOB".
There's something seriously wrong with loot tables when specific drops are so rare. Especially when they shouldn't be.