I'd hate to toss an entire HD shot over an artificial looking saber. But at the same time I don't want to introduce new elements like rotoscoping. I'll tell you what I might be able to do. I might be able to chroma key out the 2004 saber, with the GOUT underneath it, and see if the true saber will show through the keyed out area. That's what I did for one shot where Obiwan's saber is purple. Keyed out the purple, and got a nice looking saber underneath. I'll see what I can do.
And I thought I was almost done [sad face].