I really like working inside a terminal, and I like being able to navigate seemlessly between code tabs and terminal tabs as though they are one. I can do this easily in vim+tmux, I can't do this easily in IDEs where the mouse is considered first-class. I do miss certain features of IDEs, but being able to toggle between shells, tabs and code is my killer feature.
I just switched to this setup now... Before, I was using kate (which is very nice) but I switched exactly for the reason you've mentioned. terminal and editor in the same place.
