An excellent board and nearly effortless assembly and programming. Besides a minor issue with USB C->C charging and connection (USB A->C works great) I had no issues getting this board up and running. There are STLs available on Thingiverse for the case if you want to print a case yourself. There are event the .step files available to modify the case in your cad program of choice!
ZMK is easy to program and there's a provided git repo to quickly fork and build from for custom layouts. The day I got my PCB I was able to assemble, print a case and flash a new colemak layout (literally just drag & drop with ZMK).
100% worth the wait on the group buy.