When I tried Krita a few years ago I couldn't imagine using it over things like Clipstudio yet.
I am really rooting for Krita though, so Ill probably give it another shot soon.
Clip Studio still has a number of features we don't have yet, but we're regarding it as our main competitor. Now 5.0 is out, we will start looking at fun features again, and we've already made a little list of things CSP has that we want for Krita, too...