Well, if you plan on using the command line then you don't need to learn to run programs in the IDE. You can just learn the other stuff.

But there's no doubt about it, learning to use an IDE is an investment. It's not needed for "hello world" but pays off when using complicated API's or refactoring a large application. And nearly all the API's we use these days are complicated; languages that don't have large standard libraries aren't used much.

The irony is that people who don't use IDE's spend large amounts of time configuring their text editors. How much of an investment is it to learn vi?