Yea I went up 1/2 in both Japan Black and Triple White PK. Fits really ok tbh, it's just the length that is a little long. With insoles it's pretty much perfect.
A sizing question, does the tricolour NMD fit a lot bigger than the other PK NMDs like Japan Blacks or Triple Whites? I currently size up half a size from my TTS. A bit of leg room length wise but width is fine.