Even if Luakit itself is getting commits, last I checked the underlying webkit code it's based on doesn't get security updates, so as much as I would like to use it; it's really not a good idea: https://blogs.gnome.org/mcatanzaro/2016/02/01/on-webkit-secu...
Yes, there were a few commits recently, but doesn't look like it's suddenly awesome again.
That said, I really have to try it again.
I used to use it extensively (1-2 years ago) as one of my off-browsers (prefer that to profiles) but at some point most bigger websites (like Facebook) were wonky.