I think I find where
DKoK women are lock:
https://en.wikipedia.org/wiki/Lebensborn
not so (physically) hard for them as been reduced as
https://en.wikipedia.org/wiki/Bene_Tleilax#Axlotl_tank
yet still quiet a grim dark future as
http://lagon1.deviantart.com/art/Death-Korps-of-Krieg-Sentinel-424591108
is nothing else than the mecha bipedal version of
https://upload.wikimedia.org/wikipedia/commons/4/4f/Bundesarchiv_Bild_101I-801-0664-37,_Berlin,_Unter_den_Linden,_Sch%C3%BCtzenpanzer.jpg
Women do not only give birth but also participate to "Krieger Junge" indoctrination. This way
DKoK are quite prepared to serve Inquisition too as the Matriarch would be seen by them just a a kind of battlefield mother guiding them when they work as
SoB auxilliary troops.
What I like with some
GW fanboys is that they think that if something isn't in the rulebook nor in miniature range, it doesn't exist in the Universe.(aka deleted from Imerial archives
LOL)
This way from one day to another Squats, Ratlings or Beastmen just stop existing while some special character (Cypher, Sister Celestine, Abaddon...) just happen to have always existed even in the time they were not on the table.
(by the way wanna add Squats allies or even Orks mercenaries to your
DKoK? look at Panzerfauste
http://www.hystericalgames.co.uk/ )
In WFB, I remember a
WD article explaining steam tank never existed (it was just a confusion with some king of water tank for a mobile kitchen) then one day the plastic release made it existing again.
However this fits perfectly to the backgroup (forgotten world because of warp tempest, fallen Dark Angels dispersed in time and space after Luther fall, discovery of Standard Template Constructs in a Space Hulk...)
More over Inquisition archives may look like G. Orwell 1984's Ministry of Truth which correct History in realtime.
I remember when Winston Smith is ordered to "create a patriotic hero" he start writing about his (imaginary) act of valor during (real) battles, explain how his engineering skills helps the evolution of hand grenade to the current model,...
Then one other day he deletes all existence of this traitor.
So today there may not be, been nor will be any female in
DKoK, but tomorrow if The Emperor (of Lenton) decides to have more female (customers), then
DKoK will be and would always have been mixed-sex.
Until decision is taken, Inquisition makes sure that no (positive nor negative) answer appear anywhere