If I'm in "society," I generally carry just a SAK. Sometimes and Endura 3 clipped to my back pocket if I want it on me for SD reasons when I go to bad areas around here. In less developed areas, it's a SAK and a Puukko or Opinel #10 / #12.
In the former scenario, the SAK is always used first. If it's a dirty job, like cutting holes in the ground or scraping unsavory muk from my boots, the Endura will get used. Outdoors, the Puukko or Opinel is used most the time because with extended wood working they're simply more comfortable and stronger under prying and poking actions. If I'm travelling light outside I'll carry just a SAK, as it's capable of most things I do. When it's rainy like it has been recently, batoning is a quick way to get some dry wood together for the fire though, which is the main reason the larger blades come along. If all I'm planning to do is whittle some basic tools for fun and make some shavings to get a little fire going so I can cook an apple, I'll just bring my SAK.
My EDC SAKs are Bantam, Camper and Farmer. The latter has kind of dropped out of favor since metal handles and cold weather don't mix very well.