Hi Jimbo!
I guess if we wanted to do something like this, we'd have to find a license that solves some really important problem. I don't know what the Creative Commons license here is supposed to have as an advantage.
The advantage would be that people using the Attribution-ShareAlike licence whould be able to use our works. I'm pretty sure the creative commons licences will be widely used, because it's easy to understand how they work. The modular construction system is a good idea and it's representation by logos is so, too.
But I can see that dual licensing whould complicate things for contributors, and it might not be worth the trouble. I just wanted to bring this to our attention, because if we wanted to dual licence our articles we'd better do it sooner than later.
Kurt