Yes, they do actually.
Here is the script from one of the Cleopatra models:
desc = Cleopatra/slow-knockback-fast/follow and slash
;Triggers
:state=0,plrdistwithin=300,plrcanbeseen:state=1,rotatetoplr,setframe=96
:state=0,shotdamage=1:state=1,rotatetoplr,setframe=96
:state=1:incframe=96
:state=1,frameatend=96:state=2
:state=2,plrdistfurther=75:rotatetoplr,movefore=40,animate=92
:state=2,plrdistwithin=75:rotatetoplr,movefore=10,animate=93
:state=2,animationover=99,plrdistwithin=40:plraddhealth=-1
;:state=2,frameatstart=93,plrdistwithin=75:sound=audiobankvoicesmalemummybite.wav
:state=2,healthless=75:state=3,setframe=97,movefore=-20,sound=audiobankvoicesfemalecleohurt.wav
:state=3:incframe=97
:state=3,frameatend=97:state=4
:state=4,plrdistfurther=70:rotatetoplr,runfore=10,animate=94
:state=4,plrdistwithin=70:rotatetoplr,movefore=10,animate=95
:state=4,animationover=100,plrdistwithin=40:plraddhealth=-1
;:state=4,frameatstart=95,plrdistwithin=75:sound=audiobankvoicesmalemummybite.wav
As you can see it's mentioned several times at different values. Sometimes 10 and at least one other time at -20.
edit: just saw your edit and I will try in the morning (it's getting a little too late here

)