Found the ergonomics of rc-update and other commands exceptionally decent, and consistent enough that I could usually guess the correct invocation even if I hadn't used it in a while. Never saw it break or tie itself in knots (which, on Gentoo, at least as I managed my Gentoo systems, was an accomplishment). I find the config syntax non-awful. Every other init system I've tried is worse (IMO, obviously) on one or more of those fronts, and not enough-better on any others to make up for it.