Now that the novelty of female aircrew has, fortunately, worn off, regrettably one needs to consider the practicalities.
There is no doubt that female aircrew are just as skilled as their male counterparts, if not more so in many cases. But, nature being what it is, they might well need to take time off to twist out the odd brat or two. Nothing amiss with that - except in the eyes of the cost/benefit beancounters....
If you invest £M in training your aircrew, you might reasonably expect a return of service on your investment. Certain airlines manage this by granting aircrew (of either gender) the right to 50% work / 50% pay once they've achieved 5000 hours (perhaps 6-7 years of line aircrew time). However, that's probably vastly less achievable in the Mil; nevertheless, it must be accepted that female aircrew
might prove rather expensive if they suddenly need to leave to breed.
That said, it was always much more pleasant teaching the girls to fly at the UAS (and elsewhere). Not only did they usually try harder than the blokes, but they did actually wash their flying suits more than once per term!
Mind you, flying on multi-crew aircraft with female aircrew was also great fun.... And yes, I did actually know that VC10 crewing was often manipulated when I was due to check a male pilot, so that we had a female navigator - but that just added to the fun....
