Saim-Hann are known to be relatively barbaric compared to most Craftworlds. I found the idea of them leaving the poor sods to the cruel whims of the Dark Eldar hilarious. They'll have wished they'd just been cut down by the Wildriders.
"Oh how awful, did he at least die painlessly? To shreds you say? Well, how's his Dracon holding up? To shreds you say? Very well then... Sad, sad, terrible gruesome news about my colleague Archon Mhu'bhutu." - 'The Feather', Dracon of the Bladed Lotus