Eu tenho uma semi-solução para mostrar os dois:
# window titles
set-window-option -g window-status-current-format ' #[fg=white]** #[fg=white,bold][#{window_index}] #[fg=green]#{pane_current_command} #[fg=cyan]#(pwd="#{pane_current_path}"; echo ${pwd####*/}) #[fg=white]**'
set-window-option -g window-status-format '#[fg=colour244,bold][#{window_index}] #[fg=colour244]#{pane_current_command} #[fg=colour244]#(pwd="#{pane_current_path}"; echo ${pwd####*/})'
Adicione estas linhas ao seu ~/.tmux.conf
e receba: