I replied to your similar question in the other thread also. The carbone blades in Opinels are a little softer, I think. I have one each of the 'carbone' and stainless, and have noticed the carbone takes a very, very fine edge, but is also a little more delicate. I have dinged mine a couple or three times, though I don't know if it's actually been dulled inside the handle. The Sandvik stainless of the other one is spec'd by the maker up to ~59RC, and I think Opinel took advantage of that. It seems a little more robust at the edge. I've thinned the blades on both of mine, so I tend to be a little more careful with both of them. I could see a possibility of rolling or denting the edge, if it's very fine, inside the handle.
You might be able to build up the rearward end of the blade well in the handle, by placing a small piece of rubber/plastic in the slot back there. Just enough to give the rear of the blade something to rest on (like the 'kick' on a more conventional folder's blade), which should also lift the tip a tiny bit, and keep it from contacting the wood in the handle. Some have used leather or wood to do this, but if that absorbs any moisture, it could eventually rust or corrode the portion of blade edge in contact with it. This is why I'd use something in plastic or non-porous rubber of some kind.
David