Ah... the Eternal Question: Which SAK for EDC?
And, the answer is different for different people... a good thing, I guess.
You need something slim, but more substantial than the 58 mms, and scissors are not a priority. You haven't balked at Spider-man's emphasis on the awl (which I agree with entirely).
...I was thinking of a Farmer, Cadet, or pioneer Alox but it is hard to judge the size compared to my Huntsman.
The Farmer is almost as heavy as the Huntsman, but considerably thinner. It feels pleasantly beefy in the hand, but is still comfortable in lightweight pants. The blades are more substantial than those on your current 91mm SAKS. The in-line awl on the Farmer is one of the best blades in the whole Victorinox line up.
You have a saw on your Swisschamp and Huntsman... do you use it? If so, then the Farmer would be an outstanding choice for your needs.
The Pioneer is a bit slimmer than the Farmer (the saw layer is relatively thin, so there's not a huge huge difference), but still quite substantial feeling in the hand. Again, it has the same more substantial blade stock and suberb awl as the Farmer.
The Cadet is *very* slim. Super slim. Perhaps too thin? Depends on which you value more... disappears in your pocket or comfortable to use. No awl, but the nail file can be ground to a point to make a serviceable punch. If comfortable pocket carry is your priority, then the Cadet bubbles up to the top of the heap.
The Swissbianco Bushcrafter and Lumberjack are another couple Alox models that might fit your needs.
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Bottom line(s): Of the Alox models you're considering, Farmer if a solid working tool is most important, Cadet if easy carry is most important.
Personally, for these criteria (comfortable pocket carry, scissors and saw not mandatory), I'd go with the Spartan. It has a terrific form factor, you can put Plus scales on it, and I use all the tools the Alox alternatives lack: corkscrew, toothpick, tweazers. Its partners in crime -- Tinker, Tourist, and Small Tinker -- would be close runners up.