I've recently installed Funtoo on my laptop, and have a Gentoo desktop running systemd, I also managed to get it running on the laptop, and I'm satisfied with it, so far I haven't had troubles with systemd, and its nice having my laptop booting fast, among other things. systemd definitely works very different from openrc, but it does claims to be a different thing, so that just means you have to learn it, and it provides good documentation, In my opinion is not about 'getting used' is about being willing to learn it, if you will test it on your machine and then judge it.
A few years ago, I got away from ArchLinux when it did the switch, because I had issues when I upgraded to systemd, and at the time was not skilled enough to know how to get around those issues, and was not willing to learn about systemd, but a few months a go I decided to give it a second try, but this time, I actually was willing to learn it, and so far I'm happy with it.
PD:I know systemd is not supported here, and I'm on my own with issues I get for using it :).