By the way, I had not seen that explanation of that second link you've posted, that one works awesome!!! Kinda weird that he explained that trick.

Yeah, I do know there are super strong nylon cables that are thinner than 1mm and can hold about 100kg. David Copperfield uses them to fly around in his show too, he even carries a lady while in the air, so he'll probably uses 2 wires (100kg + 100kg each, so 2 persons would be no problem I think).

Cheers