The mammet bc is easily done with a duo. Probably can get done with a talented soloer as well. I go BST/NIN and my duo partner goes RDM/BLM. Like the other mammet fights, he's only a real danger in his sword form (for /nin anyways). He once killed me with sword + aoe while my shadows were down, I reraised and he proceeded to target me with -ga3 killing me even though my duo partner was still alive with hate on the other side of him. I've gotten an xp scroll everytime I've done this fight. Not sure if going with an xp in inventory will affect the loot pool or not.