In Buenos Aires very few people EDC any kind of knife.
The more common are Victorinox SAKs, even among outdoor sport enthusiasts like hunters or climbers. Mostly the regular models without a lock. Nobody freaks out with them, you can carry and use them anywhere. I usually take a SAK as a back up to my main blade, for the tools and to use it in places that aren't knife friendly.
Multitools aren't that common. I've been carrying a Swisstool for a long time, and people are still kind of amazed by it. If you see a multitool, it's usually a cheap knockoff sold at hardware stores. Leathermans and Swisstools get really expensive here, they cost more or less a whole month's pay for many guys.
The only people I've seen carrying good quality folders work at gun or knife shops. Of course, there are knife enthusiasts who are the exception.
Slipjoints are VERY rare, they are even hard to find at shops. The only person I know who EDCs one is my dad.
Workers in the rural area carry a fixed blade of some sort (of very varied quality) .
Teenagers tend to carry very bad quality autos or tactical knife knock offs. My father is a city magistrate, he deals with a lot of the unlawful weapon carrying in the city, and he told me that he sometimes feels pity for the guys caught with a knife. Last week a teen caught with a broken auto was given 15 days of arrest!