Do you ever get cranky having to switch between apps? It does my head in sometimes XD Do you still use Photoshop? Did it eventually get better for lineart? I remember having to use Illustrator for lineart and going into Photoshop for colouring (and hoping I would never have to fix the lineart XD).
I could never manipulate textures that well :O
Sometimes I do go back and forth between Adobe Photoshop and Clip Studio Paint, but mostly I use the later. Photoshop did improve, with the ability to customize brushes with smoothing, variable stroke, and brush hardness that is pen pressure activated. But Clip Studio Paint is my preferred illustrating app hands down! :D