Sizing for the flyknits at least for me isn't totally consistent across the different models, and I own the racers, trainers, lunar 1s, and chukkas. I know for the FK trainers, a lot of people either went TTS or down half a size for the initial release of trainers when the flyknit around the heel was really formed to your foot like a sock. But in later releases, after getting feedback from runners, Nike decided to put extra padding in the heel, and people went up half a size from the initial unpadded release for a better fit.
I would guess the 9s will be TTS for me just because the Kobe line has consistently been TTS for me personally, but honestly it's hard to know for sure without trying the 9s on or hearing some sizing feedback from people who've worn them. I'm a big fan of flyknit though, very lightweight and comfortable to me.