My try with GIMP is that I find that the interface is clunky, and the absence of non-destructive editing, and it’s nowhere near the level of Krita/PS at a mechanical level. I tried the version with NDE in GIMP, but I just hate the flow and I find the absence of ease of access to filter as well as lack of inherent mask a issue. So, I’ll stick with Krita instead, and it works out for my needs, but I’m not fully satisfied unless I have better selection tools in there.