Have you solved the lack of liquify tool in CSP? I think I have. https://assets.clip-studio.com/en-us/detail?id=1716631
Make a sketch in raster, then use this based liquify brush some fag made to get something like liquify. Then the actual lineart can be vector so you can get the benefits of vectors. I don't know why the nips that make this shit don't just have a liquify tool though, fucking stupid if you ask me.