For years, I owned Opinels, but rarely carried them because of the lump they make in the pocket. Once somebody here pointed out how easy they are to modify, I started putting them in my pocket. As they come from the factory, even a 6 is too lumpy for my taste. With a thinned handle, even a 10 can be carried comfortably, but a 6 works best.
With regard to the new knife, Opinel has for a log time been prone to overthink their designS, answering questions that nobody was asking. The hold-closed notch, introduced in 1990, I think, probably in response to some ill- considered liability concerns, is such an example. This notch at the bottom of the ring made it possible to lever the ring off the knife by opening the blade against it.
Their response to this was the most recent iteration, a nub on the virobloc which engages a groove in the ferrule to limit the rotation of the ring but presumably makes it impossible, or at least more difficult to lever the ring off the ferrule. An unfortunate side effect is to limit the rotation of the ring to one direction only, which happens to be not the direction I prefer to use.
This does not really have anything to do with the new design, except that it appears to follow the same kind of overthinking that resulted in so many completely unnecessary modifications to the virobloc.