Hi there,
Just (re)installed slimbookos-24-108 on my executive (es keyboard) with encryption enabled. Issue is, on boot the keyboard layout is en_US so I have to enter special characters by finding the equivalent en_US position.
I've tried to update grub, initramfs, with the keyboard configured at /etc/default (XKBLAYOUT="es"), etc.
(Also tangentially, Ubuntu does a graphical decryption screen, while on the executive shows a small, almost unreadable console window).