Uh, if you create an alternate SRD for use with ORC which uses the stuff in the Creative Commons license, you're now putting it under not one but TWO licenses. This seems, at best, useless and expanding page count and confusion. At worst, it means if there is ever a means discovered to circumvent or terminate one of the two licenses, or a conflict between the two, your publication would go down regardless of which two it happened to.
I mean, you CAN use both. But you're creating more mess and gaining very little.