I was unaware that they no longer depended on Dracut and now support initramfs-tools, which also seem to be the earliest clevis version that got packaged in Deb

I was unaware that they no longer depended on Dracut and now support initramfs-tools, which also seem to be the earliest clevis version that got packaged in Debian. That makes the initramfs-tools/dracut distinction a historical aspect of the project.