Was just trying it out earlier this week. Or at least wanted to, after hearing all the good opinins about it over the net. Unfortunately using xmonad it simply refuses to display in certain positions. When I found a position where the interface was displayed, there was still no tooltip on the icons, which makes recognizing their function non-trivial. Anyway, after I spent 8 minutes trying to find a place to set custom include folder unsuccessfully for my project, I gave up, and went back to QT creator.

Will try again next year.