Thanks! Interesting to read the rationale behind it [0] which in short is, try not to use what is basically a terminal emulator within a terminal emulator, and window management should be done by the terminal emulator.
I primarily use tmux for session persistence (in ssh sessions) anyhow, and still default to my muscle memory for new tabs/windows in the window manager.
I haven't tried it yet. The proof of the pudding will be in eating it I suppose.
[0]: https://bower.sh/you-might-not-need-tmux