Ok, siege showed up. 4 squads, 3 of which were kind enough to converge on Morul, who is locked out of the fortress mainly to ensure that nobody steals his kills. So this is a 48 on 1 situation, armed with a mace at talented skill. The orcs are slightly nerfed in that their size is one lower than normal, but I upgraded them to steel weapons/armor, so that probably balances out. With no flux, I wanted the steel supply rather than iron.
The first screen grab shows him after he's worked through about 2 of the squads. Note that there are 4 orcs simultaneously in midair within about 6 tiles of Morul. Every so often he does this superhero thing where 3-4 enemies will almost simultaneously be thrown, and then he'll go a while when none get thrown. It's a bit odd.
The 2nd shows Morul's wounds just a few kills later - I think he's burned through about 35 of the 48 from those squads (crushers, lancers, lashers with the usual mix of wrestlers). No light grey, not even tired.
After he finished these 3 squads off I sent him off to clobber the 4th that was still sitting on the edge of the map. I was surprised they hadn't taken off - usually that last one flees.
Update: 65 kills from this siege (a kobold thief showed up in the middle and was promptly swatted out of the way). He's up to high master armor user (started the siege as accomplished), but mace is still talented. My guess is there was a lot of wrestling in there.