Geany also has its place in my launch bar with a nice balance e between low key IDE (class browser) and minimalism while feeling Linux native.
I also use vim and sublime but for small quick projects I like the comfort of this. One thing I miss (maybe I didn't search enough) is multiple cursors though. I can't live very long without it.
I'm not terribly familiar with Geany, so don't take this as a confirmation that it's not possible, but Kate, which is sort of KDE's Geany, does have vim keybindings.
With Geany being a lightweight IDE, I'd say Kate is a feature-rich text editor, so it's not quite the same, but maybe it works for you nonetheless.
