I think it will likely take significant modification to fit a mech keeb in the laptop as is. [I asked about the stock keyboard dimensions and was told the module is 3.8mm thick](https://community.frame.work/t/the-keyboard/155/5) which doesn't leave enough room for low profile mechanical keyboard switches that are all ~8mm thick without accounting for caps.
That said, I'm right there with you hoping to see some cool mech keeb work around these laptops!