Just received the two pairs of Bikila's I ordered. Men's 40 for me (I was pretty sure they'd be too big) and Women's 40 Bikilas for my wife (her size in KSO).
The Men's 40 fit me as expected - a bit too long. I have a pair of KSO 40s and KSO Treks in 39, I like the fit of the 39 much better.
I was surprised to find that the Women's 40 Bikilas were/are basically the same length as both pairs of my Men's 40s. I slipped em on, and they are a bit narrow for me, and surprise, just about as long in the toes as my Men's 40s.
sorry, low res iPhone pics below:
My M40 KSOs on the top, and Men's 40 Bikilas on the bottom:
Here are my M40 KSOs next to the W40 Bikilas I bought for my wife:
And finally, a side by side shot of the men's and women's Bikila, both size 40:
So I'll let my wife try the W40s tonight, but I'm guessing they will be too long. I had planned to size down to women's 40s, but after trying these I think they are too narrow. Guess I'll have to wait for a true men's size 39 in the Bikila. I've run 100 or so miles in my 40 KSOs, so I'm sure the 40 Bikilas would work for me, but my M39 Treks really do fit much better. Bummer.