[martythemaniak]

I'd say it's definitely the colemak change. They keyboard by itself takes some getting used to, a new layout on top would be overwhelming.

I kept mine pretty close to a standard qwerty - the only customizations are where I put the "\|", backspace, dash and a few other keys, along with what to do with all the thumb keys. Even with these relatively minor changes, it still took me about a week to recover my WPM, and I had to use their touch typing software to practice for an hour or two. Making only a few changes also makes it seamless to switch to laptop keyboards, etc.

[gundmc]

This matches my experience exactly. I use a standard QWERTY setup on the moonlander, with only changes being the thumb clusters and changing caps lock to backspace. After a few days of practicing, it feels natural and seamless to switch back and forth.