Vinny is worried that the use of IntelliJ IDEA has changed how he works, and he's worried about going to a project that won't let him use IDEA.
Vinny, at least for the project you're concerned about, don't be: Eclipse has many of the IntelliJ features, and some IntelliJ doesn't have. You'll feel a little bit of pain, but not too much.
However, you're correct. Modern IDEs do become addictive. One of the reasons I don't like writing in other languages, or in other IDEs, these days is that I'm addicted to the refactoring support in Eclipse and IntelliJ. I truly dread going back to doing C++ coding. ;)
All I can say is that I'm gaining an understanding of why the ex-Smalltalk coders always seem bitter. ;)