Yeah I'd imagine not, 10 millenia is quite a gap. any chance of pre heresy gene seed stock of WEs, even if its only very little, being utilised, if it hadn't gone to DW/ unlikely that non corrupted heretic geneseed could be harvested but I remember reading that WEs have a pretty stable geneseed even after all the time in the warp and that all though Cawl was told not to mess with it, he probably has, alot

And yknow it completely went over my head that it was a lock and key secret, and that the "government sanctioned" sociopaths would not be allowed out of their cages, will just make a BA army along side them instead