Just duckduckwent it, and turned out I had seen it already. My doubt about it is how do you press Shift+F12?

The layout is fully customizable. That being said I just stick with the default, works well for me.

By default F12 is on the lower layer "V" key.

https://docs.moergo.com/glove80-user-guide/typing-with-glove...

It's really not that bad IMO. It takes some effort for sure, but not enough to become insane...