For some reason people on HN think if something isn't useful for their specific workflow, then nobody should have it or use it.
This keyboard is using this $27 set: https://www.aliexpress.com/item/33006008300.html
On the keyboards that support it I've had it remap to another layer if I hold it, but I'm thinking of using it for escape/ctrl, as I do use some emacs commands from time to time (mostly evil mode, but not everything). But I haven't decided where to put my layer switch key yet.
Edit: I won't hold out that long here. Here's the link to the feature to make this possible for anyone interested: https://docs.qmk.fm/#/feature_advanced_keycodes?id=mod-tap
It's spelled "Raymond Luxury Yacht", but it's pronounced "Throat-wobbler Man-grove!"
"You're a very silly person and I'm not going to interview you."