I've never seen their choice of editor improve their coding speed. Haven't seen it on videos online. The idea that being fluent in VIM makes you an all around faster/better coder and the IDE is a crutch just isn't supported by evidence IME.

I use IntelliJ. The startup is a bit slower. And the minute or so pause if I change up dependencies can be annoying (though that's rare). On the other hand I always have method signatures at my fingertips, depend a lot less on the web version (of the same documentation), can jump into compiled libraries for exploring interfaces, and instead of a fuzzy "ack-like" symbol search, I have true jump-to-definition/open-class, etc. I have access to the FSC which provides continuous feedback as well. Ensime is a pale shadow of IntelliJ IME.

Maybe those things aren't important to some people. I find it makes me very productive though, and I haven't met a VIM user who can outpace me yet (though I did see some true VS.NET/RAD-tooling masters back in the day that could put me to shame).

All this just to say: Use what works for you. If that's IntelliJ, cool. If it's VIM, great. But there's a lot of anti-IDE sentiment out there. It's just another tool. Use it if it makes sense. Judge it on it's own merits. You are not less (or more) of a coder for using IntelliJ.

As long as you stay away from Eclipse at least. I think we can all agree on that. ;-) (Seriously Eclipse... It's 2014, and you still can't easily theme your IDE with a couple clicks?)