as far as I know they don't drop on calypso any longer if they ever were lootable. Only way to get them nowdays is if you find someone selling them on auction.
Haven't changed my gameplay because of posetive loot gain rather because I've been forced by the system.
Changed my gameplay because of having no real choice and good old memories.
Same.
oh yeah this reminds me, my avatar is also known for getting shot in the back and killed during team hunts in pvp. Those people have claimed just like johan said that they thought they were about to heal me.