I am a long time intellij user.
The company where I work is likely to introduce Rational Team Concert to our department shortly. I went to the RTC demo and it looks like a reasonable product, built around Eclipse, but I would rather not give up using IntelliJ.
Does anyone have experience of using non-eclipse IDEs with RTC?
It seems that the answer is no.
Coexistence could cover many aspects; source code repository, Task lists, builds etc. But the first step would be integrating with source code repository and RTC uses something called Jazz.
There seems to be no available plugin nor plans for such.