earlier today I managed to get on irc at #raspberrypi, where I was told that if I use 32 bit arch on rpi3 I should be fine. That kernel should have all drivers and such stuff. (noob terminology here)
so procount, your post warms my hart confirming that it works on almost 50 distros, but would be nice to see: "yes, it works on arch", but I'll take your answer as gold.
In any case, if I get stuck, I'll come back here to ask for your help.
Now to the fun part of buying display!
Thank you all for your time and input.
because I'd rather own a free OS
than steal one that's not worth paying for.