This looks interesting. It's very new, so it will likely be a while before any OS would adopt it, but it definitely shows promise of a possible alternative to grub down the road
I use it on all my machines. Debian, arch and void Linux. I have an efibootmgr script on each machine with my setup in, so if I ever need to change a setting, I update and run the script. In void, I have a hook for dracut to call it so everything stays working whenever I have a kernel update. It's very simple and easy once you get the hang of it.