In 2016, the name "Manga Studio" was deprecated, with the program sold in all markets as "Clip Studio Paint". The version released under this unified branding (build 1.5.4 of the redesigned application) also introduced a new file format (extension .clip) and frame-by-frame animation.[7] In late 2017, Celsys took over direct support for the software worldwide, and ceased its relationship with Smith Micro. In July 2018, Celsys began a partnership with Graphixly for distribution in North America, South America, and Europe.
I use both in my workflow, depending on the type of job. CSP is really great for digi-painting or comic type projects. the vector layers are really great, and for work like comic style t-shirts I usually find it really natural using vector brushes, the vector export is not all that useful, but the benefits of CSP vectors are that you can size your artwork up and still retain the quality, I usually export a high rez PNG then vector trace in either Image Vectorizer or Vecorize apps then paste into Designer (via Pub StudioLink) to finish the job off for sending to screen print, so I kind of work the old fashioned way whereas 20 years ago I would have used photoshop for any raster / painting, Freehand for all vector work and QuarkExpress for bringing it all together for output - my workflow now is mainly Publisher (as it covers most of Raster - Vector and Output) but I also use CSP for Natural feeling digi-painting or comic line work + VectorStyler for Vector stuff that Designer currently can't handle. I always finish off bringing everything together in Publisher for output ---- so I would recommend as it's worked great for me