Nice article! I'm gonna introduce some of this in my configuration for sure!
I have a function in my .vimrc ( https://github.com/Morantron/dotfiles/blob/master/vimrc#L229 ) that allows me to send current vim selection to the adjacent tmux pane with vimux. This comes in very handy in REPLing sessions ( MySQL and the like ).
For copy pasting stuff ( like ids, urls, SHAs, etc ) I use https://github.com/morantron/tmux-fingers which is awesome and you should totally try it! ( </shameless-plug> )