Land surveyor here. I understand the issues in play here deeply. Field calcs, just to name one thing, would be greatly eased by metric. But here's the thing: you can't make an old surveyor think in metric. The way I visualise distance is Imperial. This is deeply ingrained.
Only way to retrain is to either have the young generation abandon the old way, or to have the old guard exercise flexibility and neuroplasticity. You can change habits, but it takes effort and commitment.
I say that, and I still stick to my Vim and won't use Emacs keybindings :-D
