I probably would switch to Cursor for Swift projects too if it weren't for the fact that I will still need Xcode to compile the app.
I also agree with the non-AI parts of JetBrains stuff being much better than the non-AI parts of Cursor. Jetbrain's refactoring tools is still very unmatched.
That said, I think the AI part is compelling enough to warrant the switch. There are code rewrite tasks that JetBrains would struggle with, that LLMs can do fairly easily.