Process supervisors (runit, s6) on OpenWrt?

Has anyone used/packaged process supervision tools such as runit and s6 with OpenWrt? I see monit is already packaged. I am interested in using s6 or runit to supervise Redis, services written in Go and Rust, etc.

OpenWrt's init system and process management tools seem to be procd supplemented with busybox-watchdog. Is that accurate?

Edit: I did find a December 2016 discussion thread 1,2 on mailing lists LEDE-DEV and OpenWrt-Devel "Any interest in adding runit to OpenWrt?", proposing runit as an alternative init system to procd. My question is regarding application-level process supervision.