I had an interesting experience the other day. I have been using split keyboards for years, but only recently began using a Kinesis Advantage 360 Pro as my daily driver for work; I am so use to the layout now, that in instances where I have to use a non-split, or even my older splits, my fingers fail me entirely - like my brain forgot how to type, my thumbs eagerly searching for the thumb cluster that isn’t there.
This is one of my worries with adapting to a non standard layout. My work means I’m constantly on different devices and machines so I need to be able to use a normal keyboard and windows. Using Linux is already making the windows part frustrating.