I bought my wife an Opinel #6 (INOX) as she favors the old-fashion design.
Out of the box, it was flat dull - glinting along the entire edge, completely unsharpened at the heel. No big deal, didn't expect much anyway, and it sharpened-up easily being so thin, 15-dps microbevel.
I like that the knife locks closed. But the blade-pivot was so tight, it was difficult for my wife to open. I read online, took a heat-gun to dry it out and the pivot was nice and loose, so loose that if it is NOT locked closed, it falls open freely, which my wife did not like.
It doesn't open easily and safely with one-hand like most modern folders.
It's a manual lock, no springs but able to be operated one-handed, but it's less convenient than most lock-designs, another thing my wife recognized.
As a traditional, it has no pocket-clip so must be carried in a pocket/pouch/sheath of some type, something that both my wife and i found annoying.
Finally in use, the edge geometry is great but the edge-retention is very poor, requires touching-up OFTEN to straighten or restore the apex, unlike many of my other knives. As a box-cutter, it works as well as most utility blades in that it is very thin but goes dull quite quickly, stops cutting clean and requires more force, but at least there is minimal wedging. Still, my thicker knives are better cardboard cutters (i.e. less force required, cut more cardboard before requiring a touch-up)
If any wedging DOES occur, the blade is narrow and the handle so round that it tends to twist on cuts unless a very firm grip is maintained - again something that my wife did NOT like and another reason i stopped using it for cardboard.
Finally, carving wood :thumbdn::thumbdn: When carving/whittling, holding the knife close to the cutting edge allows for a better transfer of force for clean, controlled cuts. Wood tends to bind and put lateral stress on a blade. The opinel is very thin so it cuts deep... and binds. Prying/twisting (part of carving) easily deform the apex and, holding from the handle of the knife, the blade often bends rather than proceeding with the task. In order to put more force behind the cutting edge, one must apply pressure to the spine of the knife where you are trying to make the cut, and the thin opinel blade-spine is quite uncomfortable in this.
In summary, this inexpensive thin cutting tool is great for cutting materials which are NOT likely to twist the blade, bind it (and so require a lot of careful force behind the blade), or quickly wear it down, in other words very soft materials. Cardboard, wood, rope, etc. not so much. It isn't very convenient to carry, open, or close. Cutting paper, fabric, and soft fruits&veggies or meat :thumbup: But those things do not account for the majority of my cutting needs, and even if they did, the inferiority of this knife for other common uses compromises its utility. I'd rather pay 4-5X more for a knife that can do EVERYthing I need it to do, do it well, and be safer and more convenient as well, and apparently my wife feels that way as well. The Opinel will wait in a drawer until my girls are old enough to use it responsibly.
That's my $0.02 No hate, just realism.