I think I get a tiny bit more power out of the Sinewave Revolution than I get out of my Luxos U which is on a different bike.

I always check out all of my equipment before I pack up my gear for a tour. It is rare when I am surprised by something that does not function, but there have been a few times that I was glad I set up a tent to check it first or checked my stove to make sure it works well while still at home, etc. Given the bad luck you had with your Luxos U chargers, you might want to hook up the Sinewave and make sure it puts power into your powerbank ok well before your tour starts,

If the battery pack in the Luxos U is still there, that might put a small drain on your hub even when the light is turned off. That might be something to check before your tour starts. It is my understanding that the battery pack supplies the standlight on the light, thus I assume it is still part of your light.

If you are curious about my setup for electrics for touring, I described that in detail on another forum at this link:
Electrics that I use for bike touring - what works for me.