Watch it. Like Ubuntu it doesn't have a root password, which puts a heavy load on what's allowed by sudo.
The *first* thing you have to do is set up a "profile" which updates the local repository lists and installs some mix of programs, if you subsequently try that a second time (Menu from bottom-left -> "Install Applications" -> "Desktop profiler") it will do its best to undo anything you've done manually with minimal confirmation.
Being used to using apt etc. I consider that to be extremely undesirable behaviour, it appears that you can disable it by renaming /usr/bin/swprofiler.exu
Apart from that it behaves like "a Debian", to the extent that installing non-standard packages using DKMS etc. works.
I came across it when somebody on YouTube mentioned it in the context of giving an old Panasonic Toughbook a new lease of life. It appears to be generally usable with 4Mb while I'd expect standard Debian to want at least 8Mb and more realistically 16Mb or more, and since standard browsers etc. will run I think it argues strongly against the extra memory demand being "the price of progress".
Despite using KDE v3, because it uses Qt5 I don't think it's going to be much help testing the original Qt4 (if anybody's still interested in that).
MarkMLl