Another point i'm not sure has been made here yet ( 5 pages to read through now ) is that this measure would help balance out the fact that sex before birth isn't going to happen as apparently this would interfere with some future plans.
When we actually DO actually manage to get 2 kitties of the opposite sex then at least we wouldn't have to wait 2 weeks to continue our breeding projects.
I refer back to this thread too :
http://www.kittycats.biz/forum/showthread.php?tid=2199