I noticed you don't have layer switching behaviour (hold) on thumbs why is that?

[PrzemekRychter]

I'm experimenting with my layout, i use graphite, i have navigation and symbol layer apart from base layer, i am trying to find best placement for modifiers like ctrl, shift, alt, alt gr (alt gr is important for me for diacretics). What is nice about your layout that you use combos e.g hold to keys to do something, i think i will use that in future, also repeat key function seems very attractive.

[getreuer]

@PrzemekRychter that's a fair question. I have at times had discomfort with my thumbs, and it is possible that thumbs get overuse injuries, so I am cautious about anything that adds load to my thumbs. That said, thumb switch keys do work well for many people, just not me. Layer switches (and/or mods) on the thumb keys is very popular, e.g. the Miryoku and Seniply layouts both do that.