So, here's a question:

The only point I still don't understand is from episode 10-ish. Millhi is wearing both her country's Holy Swords when she goes to face Leo, but then Shinku is still able to use Palladion when he's chasing after the demon. I'm pretty sure that's Palladion, since it has the same flame-like dispersal effect and turns into the same surfboard as always. The only explanation is that wearing the rings doesn't necessarily mean you're weilding the weapon... but it would have been nice to see some clarification.

I dismissed it as a rule of awesome -- you know how the Spiral Power rubbed off on Viral in Gurren-Lagann? But Steven gave it more thought:

I'm noticing things the director did that were very well considered. One thing in particular: when it gets serious in ep 10, and Shinku is going after Millhiore, he doesn't have the magic ring. All the stuff he does, including all the magic he uses, it's all him. No outside help.

That wasn't accidental. It's when Shinku is at his most heroic, and the director wanted to make sure there wasn't any doubt that it was Shinku himself doing it. And the reason why he didn't have the ring at that moment made perfect sense in character and plot terms.