Based on reviews that I've seen most people were saying TTS. I read that the forefoot and toe may be a little snug, but the Flyknit upper will break in a little if it is.
If you have wide feet then maybe half size up would be the way to go though.
My experience regarding sizing... I was able to try on the Flyknit VF 4% in a size 8.5 at promo event, but I'm a 9.5 in all of the current gen running shoes (Zoom Fly, Epic React, Pegasus 35, Pegasus Turbo).
They were really tight obviously, but tight enough where I think my regular 9.5 will...