I know the op post is like 7 years old so it probably doesnt matter but I can tell you, as someone who mainly used photoshop as his main digital art program from late 2019 up until late 2024, that you're better sticking with clip studio paint.
Photoshop fucking sucks. Anything it can do, other art programs can do it better and for much less many and computing power. In regards to Clip Studio Paint, coloring is a much better experience than doing it in photoshop as the bucket tool isnt a piece of crap like it is PS. It's timeline tool makes animation approachable and fun while Photoshop's timeline tool makes animation a freaking chore, and I say this as someone who used it for their animation final this past winter. Drawing backgrounds in CSP is so much more convenient than with the perspective tool which actually makes understanding perspective and how to use grids much simpler, which I was not expecting from a tool that does the work for you but ah well. And all of this is stuff I've realized in hindsight when I started learning the program about 1 and half years ago. I hadnt realized how much photoshop was missing and how much I was holding myself back as an artist. CSP has so many more useful features that make the drawing experience better, and that's to say its the best program out there, but what Im saying is that any art program will get you more for your buck than photoshop can that are cheaper and friendlier on your computer.
This was probably not the case in 2018 but photoshop has become such a bloated piece of shit, yet somehow feels super dated and limited. Like in 2023, photoshop crashed on me close to 100 fucking times, and it wasnt until I spoke with an adobe employee that I figured out why. Because my pc's parts were like more than 2 years old and because I wasnt using the heap of trash that is Windows 11, I could not use the current version of photoshop effectively and had to downgrade to a version from early 2021. Unless I spent 100s of dollars to overhaul my entire pc setup to just use photoshop!!! At that point, it was cheaper for me to stick with the 2021 version for school and buy the one time purchase of CSP, which does not take as much storage up on my hard drive and much more forgiving on my cpu than photoshop ever was.
I get it, Clip Studio Paint can be very intimidating if you dont know what your doing. I was initially turned off from the program by how complicated it made everything from its pen pressure settings and such. It just takes time and patience to learn the program and the moment you figure it all out, the more enjoyable your time will be as you realize that its complexity is a benefit to the user experience. Trust me, Photoshop aint really worth it