Not OP, but I swapped over to Regolith a couple of months ago on my laptop and now it's on my main workstation too. Coming from Ubunutu MATE on both. Very happy with it.
It's my first time using i3 or any tiling WM for that matter. Took about a day to get used to the basics (sane defaults), and that's mostly all I've needed so far.
My one attempt to use the dedicated installer didn't work properly so instead I installed Ubuntu and then Regolith from PPA.