Just to confirm - I just re-installed /e/-OS on the phone (e 1.2 stable), using the manual method (command line, from a linux PC). The installation works perfectly and the OS works as expected - no incompatibilities reported or errors of any kind.
Just a quick note (as an FYI) - the installation instructions on the website are inaccurate (probably outdated) when it comes the menus in the Custom recovery image: in the current image, the “format Data” submenu is under “Restore to Factory settings” menu, and the ADB sideload is again, under a different menu (I completely forgot to take a screenshot during the installation)