Native is very similar except minus the "thumb ramp" effect of the top grind on the Caly family. The Native series has the added benefit of much wider selection of blade steels and in some cases handle materials & colors. I recommend that model very highly. They are a bit wider than what you're used to with the Caly family, but it shouldn't make a lot of difference. In fact, I kinda like the ergos on the Natives a little better because of the added chunkyness.
Caly Jr. is my all time pocket carry favorites.
The Kopa is very similar but can be hard to source. There is a solid stainless iteration that should be easier to get ahold of, however.