I'm curious, your the second one on this thread that finds the SAK to be less capable as a solo EDC. I have the Explorer Plus, the plus is that it comes with an ink pen and a pin.
I use it as my sole EDc, and I also have a Buck 110 that stays in the kitchen until I go fishing or hiking, definitely not an EDC.
I find the blades on my SAK more than adequate for everyday stuff includding chopping onions, opening mail and whatever else in or outside of home.
I'm asking strictly out of curiosity and possible knowledge, why would you want to carry a second knife.
Fair question.
Having carried an Explorer (my current one has the pen but not the pin) for the better part of 25 years I've formed some opinions about that knife (and SAKs in general.) As a multipurpose tool, to include a knife for those circumstances you absolutely need one, it's great. As a *knife* it leaves some things to be desired.
First, I have little use for a spear. I find the sheepsfoot, spey, and drop point - in that order - more useful. The spear (and its small cousin, the pen) just doesn't do my jobs as well as the other blade styles.
Second, the Victorinox steel isn't as good as what I can get in better knives. It's not bad, mind you, but compared to the harder stainless and carbon steels it dulls quickly, is easily nicked, and can fold over easier. It's easy to sharpen, that's a plus, but after a day of doing a lot of cutting it definitely gets dull.
Finally, the blade arrangement is sub-optimal. Having both blades on one side of a 4-spring knife makes it terribly unbalanced; choking up on the main blade, for instance, is awkward because my thumb has to reach around the other 4 layers. The short blade is only slightly better. The net result is that the blades are harder to control, especially for fine work.
You have to understand that I live a rural life (as contrasted with a "country" life; I don't live anywhere near a city, sub-development, or grocery store.) I use my knife many times a day, often for hard cutting chores. Today, for instance, I was making rafters for a new shed I'm building. I made 30 bird-mouth cuts in the rafters and used my GEC #15 sheepsfoot to clean out the remaindered wood in each one. (I'd normally use a chisel for that job, but it was clear up at the house and I didn't want to hike that far - uphill, yet!) That was in addition to opening some feed sacks, a couple of boxes that UPS delivered, cutting some shade cloth, a piece of heater hose, a piece of leather for a vise jaw pad, and I'm sure I forgot something. In my experience, my SAK wouldn't have held up; I know because I've tried.
For some people, the SAK would indeed be a completely capable solo carry. Not for me, which is why I started carrying a second knife a decade or so ago.