I've done newspaper combines before, but i've also just put hives together - after first removing one queen - with no apparent problems. No fighting, no dead bees, no worries. I did it yesterday with three medium size hives - just stacked them together in the middle and removed the other setups. Same thing with 2 hives on another stand. No apparent problems - just massive forraging activity. Hopefully this will maximize the extremely early flow.
So is the need to use a newspaper a myth, or is it sometimes really required?