Holy thread drift!
Ok, some responses on the Opinel...
BREAKAGE - Wood can break. The ability to withstand this depends on the grain and the diameter. As diameter goes up, the Opinel design gets stronger. It is very similar to a garden tool like a rake or spade - a metal ferule over a wooden handle. When extreme leverage is concentrated on the joint, the ferule can bust the wood. But, as with garden tools, this is more likely to happen with smaller handles. I *
REAM* on my #9 Opinel like it's a fixed blade and haven't come close to busting it. I feel less confident about the #8 (never broken one but it's conceivable to me) and wouldn't push a #7 or #6 at all.
THE LOCK - The lock on an Opinel won't stop the blade from closing and anybody who fails to get this will get cut fingers. It's not designed for that.
TUNE AN OPINEL, TUNE A VANTAGE AND TUNA FISH - The Opinel is a quirky knife and I won't recommend them to people who can't be bothered with tuning them. This is a massive difference with SAKs which can't be tuned even if you wanted/needed to. If you want a good out of the box experience, get a SAK, not an Opinel. Problems with Opinel's seizing up when wet are 90% (not 100%, but 90%) user error. If an Opinel is going to be used in super wet environments, the wood needs to be treated (mineral oil or Vaseline both work well). I think Opinel would do well to increase their plastic handled offerings for this reason. I use waxable XC skis (instead of no-brainer no-wax skis) and can change my own tires, so I'm not adverse to tuning my Opinels to get better performance out of them.
@Znap: glad you're having good luck with the Vantage. Problems with the Vantage out of the box is a recurring topic in the Buck sub-forum and the standard answer is to learn to tune the Vantage to deal with blade centering, rattling and lock up issues. I agree with you though, it's one of Bucks better knives. More on that in a bit. And the fact that you need to tune it doesn't make it not a great knife. Same goes with the Opinel.
https://www.youtube.com/watch?v=jLKjOhgZ8Vw
@Alnamvet: your complaints about the Opinel locking up remind of people who complain about waxing XC skis when the real issue is that they haven't learned how yet. If the knife locked up when wet, that was a result of you not knowing about how to prep an Opinel. I also suspect that your lockring failure means you popped the ring off and if that is the case, it was definitely still useable as the friction folder it was originally designed as.
DURABILITY: OPINEL VS SLIP JOINTS - I've wrecked enough slip joints in my days, including SAKs to understand their limits. The primary limit is dealing with lateral stress on the blade. Sorry. My Opinel #9 is way tougher than any slip joint I've ever used in this regard. The sodbuster design with it's massive pivot is the only exception to this. I've never had an Opinel develop even a hint of lateral play.
DURABILITY: OPINEL VS LOCK-BACK - I've owned a bunch of lockbacks from Buck, Schrade and several other makers. They tend to loosen up and develop vertical play when exposed to hard cutting, as in with wood. The Opinel does not.
Horses for courses, as they say. The Opinel is not the perfect knife for all purposes. But, the Opinel #9 fits my big hands and the traditional SAK does not. The Opinel #9 has great ergonomics made even better because the wood is formable to fit my hand. The SAKs I've use have horrible ergonomics with the exception of the 111mm line. The Opinel #9 has not come close to breaking and has developed any blade play in any direction under hard cutting use, particularly in wood. Slipjoints including SAKs and lockbacks including those from Buck have failed and loosened up in similar use. The Opinel is insanely light for its size and toughness. SAKs are heavier and don't over any durability advantage. As an ounce counter in my backcountry travel, that's a no-brainer. Opinels do require more user tuning than SAKs. This is true. But they don't lock up when wet if cared for and can be dropped in the sand/dirt and still operate; conditions that reduce slip joints and lockbacks to a grinding halt.
Back to the original point of OP... SAKs for EDC? No, not really. Not for me. I find other knives to be better for EDC and for hard use.
EDIT to ADD: As much as I like the Opinel for backpacking and hard use, I don't *always* carry it for EDC. Today, I'm carrying my Buck 500. While the 500 isn't as tough as the Vantage or the Opinel, it's a pretty knife. By off loading all my EDC tool needs to the small, light but tough Leatherman Micra, I gain the freedom to change out my EDC knife to suit my whim.
Buck 500 by
Pinnah, on Flickr