Basically Roval f***** up the original wheel design, but at least they did the right thing putting safety first. Obviously the marketing spin at the time was just a cover-up. It certainly puts me off the idea of cheap Chinese carbon rims, where safety testing wouldn't even be a consideration at all - with or without tubes. It also puts me off quality super-lightweight carbon rims given our pot-holed roads. I would rather carry a few extra grams for a stronger rim layup.