Some friends tend to hunt them.
Usually not such an issue as long as there are no Tyrannous NPCs about with them as they are MUCH MUCH tougher and do way more damage!
If there are Unknown Wormhole beacons in system (on OV) then often you may find if you aggress the Lancers then they will get back up help from much nastier Cruisers/Battleship drifters.
those may also then decide to station camp you in and try to get you for some time after.
Seems they have long memories as friend said they were still trying to get them 2 hrs later … even after they had jumped thru 2 other systems done stuff and then eventually come back.
Sound like more BS CCP content to make more things go boom to me !