After the changes to the leather weights, I decided to go ahead and farm some lizardmen over in Ilshenar for some spined leather. Equipped a brand new Lizardman Slayer spellbook, and a Reptile Slayer as a backup for the other denizens in the swamp. I head on over, only to find that the defenders that spawn there are unfazed by my special slayer books, and still take forever to kill with my spells and summons.
I then head over to the dungeon Wrong, where there are also Lizardmen Squatters and Defenders to verify my findings. There I confirm that they too are inmune to the slayers they're supposed to be weak to, so I am laughed out of the dungeon as I desperately throw my piddly spells at apparently unkillable lizardmen.
In short: Lizardmen Defenders and Squatters are unaffected by Lizardmen Slayer and Reptile Slayer spellbooks, which I assume they should be weak to.
Although it is not a true source, the UOGuide pages on them do claim that they are weak to such slayers (and it would make sense, seeing as they are lizardmen after all)
I then head over to the dungeon Wrong, where there are also Lizardmen Squatters and Defenders to verify my findings. There I confirm that they too are inmune to the slayers they're supposed to be weak to, so I am laughed out of the dungeon as I desperately throw my piddly spells at apparently unkillable lizardmen.
In short: Lizardmen Defenders and Squatters are unaffected by Lizardmen Slayer and Reptile Slayer spellbooks, which I assume they should be weak to.
Although it is not a true source, the UOGuide pages on them do claim that they are weak to such slayers (and it would make sense, seeing as they are lizardmen after all)