This is like talking about tastes in shoes or beer. Different things work for different people and the fact SAKs don't work for me shouldn't put off fans of the SAK. I'm a fan of the Opinel and that knife doesn't work or appeal to a lot of people and that's OK too.
First thing to say about SAKs is that I don't see them as being traditional. Occasionally we see and discuss traditionally patterned knives made with modern screwed together construction and we wonder if they are still traditional. To my eye, the SAKs stopped being traditional camper patterned knives when they moved to the snap-on plastic scales. On the plus side of being non-traditional, Victorinox pushed the envelope in terms of tool development and selection and in this way, I think SAKs have been more relevant than the old hyper traditional 4 blade camper pattern. But, if we're going to talk about the virtues of a non-traditoinal SAK here on the traditional forum, I'll beg for a bit of leeway to compare them to the equally non-traditional (or equally traditional) butterfly style multitool.
Stylistically, SAKs have always missed the mark with me, sort of like instant coffee does. I find them awfully sterile feeling. I could deal with the souless sterility if the trade off was durability but that's not been my experience with SAKs. I've had too may broken scales, broken springs and and loose blades with the ones I've owned. My Leatherman tools have all the stylistic appeal of Vulcan art but I've not yet had and out and out failure. I know Leatherman tools are prone to plier head failures and my plier tools have all developed some handle misalignment over the years. But in balance, they've been a lot more durable the than SAKs we've had. SAKs feel like the knife equivalent of a SWATCH watch to me. Perfect plastic trinket feeling.
One of the things that miss the mark for me with SAKs is too much of a good thing. Fit and finish is great but it actually works against utility. The tools are so polished that the edges are rounded. My cruder Leatherman products grab screws with more authority. When I need a tool, I want my tool to have it but at some point, the addition of more layers and more tools on the small SAK frame is just too much and becomes a McGyver type parody of itself. I suppose I could just limit my consideration to SAKs with a smaller and more targeted selection of tools but it's hard for me to hold them without feeling the SAK vibe of excess.
Functionally, my struggle with the SAKs is the same as my struggle with the traditional 4 blade camper and my struggle with the camper is the same as my struggle with most slip joints - they're too small for my big XL hands. I grew up carrying Ulster campers and BSA knives and they were fine when I was a kid. As an adult, I've come to prefer a full 4 finger grip on a knife and carry things like an Opinel #9 or a Buck 500 Duke. I also use my knives for food prep and prefer a blade to be at least 3" in length. This is a super personal fit issue. For me, the traditional camper pattern is just too small for my preference.
My solution to the utility offered by camper patterned knives and SAKs is partner a traditional larger single blade knife with with a butterfly style tool. For EDC, I carry a Micra, which is incredibly tough and gives me a selection of tools that all get used regularly.
EDC Pair by
Pinnah, on Flickr
For backcountry travel, I swap out the Micra for the PS4 Squirt for the small pliers which are useful for equipment repair.
Outdoor Carry by
Pinnah, on Flickr
The one SAK knife that holds some potential for me and big hands is the Trekker series. I still can't warm up to them stylistically and I see utterly nothing about them that is traditional in any way. But, at least they are big enough to me.
I know lots of people love the SAKs and I think that's swell. Different strokes.