Those layouts have a lot of layers; I didn't have the patience to learn something that complicated.
This is my ErgoDash layout. I have one less bottom-row key than the Moonlander, so I have combined PgDn/LeftAlt and ←/RightAlt onto single keys. I would uncombine these if I had the extra key, as I occasionally press Alt when I intend to press ←, but am too slow.
I also have Enter/Ctrl as a single key, but it's very rare for this to do the wrong thing.
I mostly learned the layout to reduce stress on my hands due to the more ergonomic placement of each letter.
From all the other layers I only use the cursor keys and L3 for []{}<>() and stuff like that, which are much easier to reach and I use a lot when programming.
This is my ErgoDash layout. I have one less bottom-row key than the Moonlander, so I have combined PgDn/LeftAlt and ←/RightAlt onto single keys. I would uncombine these if I had the extra key, as I occasionally press Alt when I intend to press ←, but am too slow.
I also have Enter/Ctrl as a single key, but it's very rare for this to do the wrong thing.
http://www.keyboard-layout-editor.com/#/gists/501437fce9123e...