Hi drpumpkinhead,
The license doesn't allow you to let users extract and use the assets for other things, so I think there needs to be some kind of attempt to package it. BUT If that's unavoidable because of the nature of your project, I'm ok with it as long as it's clear to the users that they can't use 'em. Just include in the readme (or somewhere noticeable) 'hey these assets aren't free!' and point them in this direction!