I've seen those, but I'm not sure if they interest me. The dry contact hilt/hand is straight forward enough, but then the hand itself is still wired to the body - no point to expend the effort for my use. Modding the hand to also have contacts? Doable, but that does leave 300volts exposed at the wrist. No trailing wires means batteries, and pretty much everything I do in electric 1/6 involved eliminating batteries, so this will definitely not go that route.
If you've seen any of my threads, you'll know I don't keep secrets in 1/6 work, so I'll put up progress pictures and describe the work.
I'll integrate the inverter into the scene as rubble, it will power both Luke and Vader's sabers. I'll modify the glove to run the wires inside it. The saber will look the part whether it's energized or off - this is the most important part because the power isn't always on. It will come on when the lights in the display come on, just like everything electrical in all the other displays/shelves. Power will come from the rails on the Detolf that also power all the other shelves in this unit - no wires running down over shelves or to a 12v transformer. Nothing difficult and nothing ground breaking. Just clean - and always looking the part.
If I can get my hands on some different supplies, I also have a few ideas using (much) thinner CCFL tubes.