I know Def Jam don't want "Pour It Up" to overshadow "Stay" in the US, that's certainly why they didn't plan a video yet ... but the song is moving very fast on URBAN Radio ... It will be #1 (and peak) before mid-february.
What's the point if you lose the momentum ?
They need to shoot the video right now and release it one week before the Grammy's, releasing the video on youtube the night of the Grammy is also smart plan, this way Stay and Pour It Up will both get massive promo and exposure.
Anyway the "Pour It Up project" needs to move RIGHT NOW ! Stay still can wait !